samsung tablet GT- P3113 have OTG USB support?

According to the USB Host Diagnostics site, YES.
Check the link for the ROMs (Build IDs) that supports OTG.

If your phone has root, you can also check out USB OTG Helper [root].


Home shortcut key to my designated webpage?

That one is quite easy:

Make a bookmark to the desired target in your web browser
Create a shortcut to that bookmark on your desktop

The second step is sometimes offered by the browser itself, but always possible using the bookmark widget shipping with Android itself.


New versions of Android force disk encryption. Since your device is not so old and it was unrooted before the wipe happened, the encryption was definitely enabled.
I do not want to disappoint you, but the fact is that no data can be recovered anymore from the device. The encryption uses a security key that is stored on-device. A new encryption key is generated when you reset the device to encrypt the storage again. So, in the absence of the old encryption key, you will not be able to decrypt the data even if your recovery software manages to recover some bytes.
I'd recommend to avoid wasting time and other valuable resources to recover the data now. It is permanently gone.


Because Android apps don't have an "exit" button like PC and Mac programs do, when you leave Chrome (or any other app), it's designed to preserve all the state so that it'll be there for you next time. If it closed all the tabs every time, then whenever you try to "share" a link, or paste some information into email, or even if you take a phone call while you're browsing, you'd get back to the browser to find all your tabs gone. That's why there's no setting to do this automatically.

On a phone, if you want to "exit" Chrome, closing all tabs, then go to the tabs view, press the menu key or the three-dots icon to bring up the menu, and choose Close all tabs. Then hit the back key.

On a tablet, I'm afraid the only way is to close each tab with the little ⊗ button.


Yup, It is perfectly fine. I do it regularly while playing games.


Some groups are not visible in my WhatsApp

Try the following steps:

Make sure that admin user have your  phone number in your address book.
Ensure that admin user is using WhatsApp Messenger.
Make sure that admin user have the latest version of WhatsApp.
In admin users Android phone book, make sure that all contact accounts (i.e. SIM, Google, Phone) are "visible" or "viewable".
In your Android phone book, ensure that all contact groups (i.e. Friends, Family) are "visible" or "viewable".
You can make your contacts "not visible" and then "visible" to force a refresh. After doing this launch WhatsApp > > Menu Button > Refresh.
Alternatively, you can use all your contacts, not just the "visible" ones. To do this go to Menu Button > Settings > Contacts > Show all contacts.


Is there a way to activate in-app purchasing on Words With Friends for the Kindle Fire?

No, there are currently no in-app purchases available (as of Feb. 11th 2014). If you read the reviews on Amazon, you're not the only one who'd like to pay to get an ad-free version, but it's not available.


Very frequent Wifi disconnection while being in China

I know this is an old thread, but I found the solution. Enable airplane mode, then enable wifi. It will show the internet connection is down, but wifi will still work. Then you can disable airplane mode and it will stay connected to the wifi (until you leave the coverage area, then you'll probably need to do it again when you return).


is there a way to recover partially received contact files from bluetooth

What phone are you sending the contacts from? If the phone is older, and especially if it's not Android, the files are most likely not compatible. You'll be better transferring the contacts via the Internet, if possible. You can use either Google account and sync your contacts with it, or use one of those sites dedicated to backing-up and transferring contacts.


How can I establish an AD-HOC Wi-Fi connection on my tablet?

There are two other Q&As here which might help you (in fact, there are several more, but most of them -- as you wrote -- are a bit "techy" or, as you put it, "really difficult"):

Does any version of Android support ad-hoc connections? could be used ith the second device involved is running Windows, and seems not to involve rooting your device
Connect android phones through adhoc wifi network is just "slightly techy", but requires root, and the Android SDK on a computer

If rooting your device is no problem for you, the second approach should be possible also without the SDK -- if you have a terminal emulator such as Android Terminal Emulator installed on your Android device. You could then execute the commands quoted there within the terminal emulator, but probably need to prefix them with the su command (to have them run by root):

su ifconfig wlan0 up
su iwconfig mode auto;iwconfig wlan0 essid "your SSID" channel 11 mode auto
su ifconfig wlan0 10.0.0.x netmask 255.255.255.0

As explained,

  your SSID should be replaced with the name of your Adhoc network, and 10.0.0.x is a different IP you give each device.

I didn't test/verify that, but from my Linux knowledge, it sounds quite reasonable. Drawback is, you would need to execute those commands each time you need to establish the ad-hoc connection -- but here some other app could kick in, once you verified the steps are working. One I found is Script Manager - SManager -- but there were some easier ones I just cannot remember at the moment. If this is an acceptable approach to you, I can update my answer and add a few more tools to compensate.

EDIT:

Here's the one I had in mind to make the script-running easier: Scripter


Updated Samsung galaxy A5 to Marshmallow but look and feel remains that of Lollipop

Lower-end phones usually won't get the new manufacturer skin (that's on the new flagship phone) with a new Android version.

As for the launcher, bootanimation and stuff, it's how Samsung chose to make it in their TouchWiz skin - they don't necessarily follow how Google do it on Nexus.

Try installing Google Now Launcher if you want the vertical scrolling experience. Not looking as harmonious on top of all the TouchWiz icons but better than nothing.


Android, just like Linux variants, use as much memory as they think they need for optimal operation. Because of this, more stuff may be preloaded, so apps load faster or the interface is more fluent. So, if your memory is almost full, that doesn't neccesarily mean that you don't have any memory left.

On the other hand, Android L uses a lot of animations, so I can imagine it using more memory than before. Nothing to worry about however.


Use sd card as internal storage and stop writing to internal memory for good

Eureka!
Here is how I've done it:

SD card partition and format

Unsure about which partitions I would have been able to relocate, I decided to recreate my sd card with the exact same layout of my Samsung Galaxy S III internal memory.
USERDATA is the last partition and there is a good reason for it:
my sd card size is greater then the internal memory and the best option has been to widen USERDATA till the possible furthest sector.

The following work has been done in my linux pc:

parted /dev/sdb mklabel gpt \
mkpart  BOTA0      ext2     8192s          16383s \
mkpart  BOTA1      ext2    16384s          24575s \
mkpart  EFS        ext2    24576s          65535s \
mkpart  PARAM      ext2    65536s          81919s \
mkpart  BOOT       ext2    81920s          98303s \
mkpart  RECOVERY   ext2    98304s         114687s \
mkpart  RADIO      ext2   114688s         180223s \
mkpart  CACHE      ext2   180224s        2277375s \
mkpart  SYSTEM     ext2  2277376s        5423103s \
mkpart  HIDDEN     ext2  5423104s        6569983s \
mkpart  OTA        ext2  6569984s        6586367s \
mkpart  USERDATA   ext2  6586368s       60749824s

Good, partitions created.
Now, still mimicking my Android device, I format partitions accordingly:

# /efs
mkfs.ext4  /dev/sdb3   -E root_owner=1001:1000
# /system
mkfs.ext4  /dev/sdb9   -E root_owner=0:0         -L system
# /cache
mkfs.ext4  /dev/sdb8   -E root_owner=1000:2001
# /preload
mkfs.ext4  /dev/sdb10  -E root_owner=0:0
# /data
mkfs.ext4  /dev/sdb12  -E root_owner=1000:1000

The sd card is ready, now I can "backup" files from emmc to the appropriate sd card partition, taking care to preserve file attributes.

Edit fstab

In the not too old versions of Android, fstab file seems to be always located at /.
Files in / are stored in the BOOT partition (boot.img);
it's time to learn to edit the boot.img.
Here are two very helpful tutorials that will get you going:
HOWTO: Unpack, Edit, and Repack Boot Images
Android boot.img manipulation
a little hint:
Do edit the ramdisk in your Android device.
I spent three days in frustration trying to do so in my pc, I guess is a matter of "endianness".
When editing the ramdisk, do sort name-list(standard input) for cpio.
I spent three years in frustrating randomly recurring failures.

My fstab before:

/dev/block/mmcblk0p3        /efs            ext4        noatime,nosuid,nodev,journal_async_commit,errors=panic      wait
/dev/block/mmcblk0p9        /system         ext4        ro,noatime      wait
/dev/block/mmcblk0p8        /cache          ext4        noatime,nosuid,nodev,journal_async_commit,errors=panic      wait
/dev/block/mmcblk0p10       /preload        ext4        noatime,nosuid,nodev,journal_async_commit       wait
/dev/block/mmcblk0p12       /data           ext4        noatime,nosuid,nodev,noauto_da_alloc,journal_async_commit,errors=panic      wait,check,encryptable=footer

My fstab after:

/dev/block/mmcblk0p3        /efs            ext4        noatime,nosuid,nodev,journal_async_commit,errors=panic      wait
/dev/block/mmcblk1p9        /system         ext4        ro,noatime      wait
/dev/block/mmcblk1p8        /cache          ext4        noatime,nosuid,nodev,journal_async_commit,errors=panic      wait
/dev/block/mmcblk1p10       /preload        ext4        noatime,nosuid,nodev,journal_async_commit       wait
/dev/block/mmcblk1p12       /data           ext4        noatime,nosuid,nodev,noauto_da_alloc,journal_async_commit,errors=panic      wait,check,encryptable=footer

All I have changed is the block number (from 0 to 1).
I couldn't dare yet to relocate EFS, someone said that somehow you may brick the device playing around with that, still studying the subject; I do know that Android keeps writing EFS (I'm monitoring it).

Conclusions and further queries

This is how I relocated the most of my internal storage data to my external sd card.
Things are slightly sluggish, as expected, but Android seems to be in perfect working order;
I can always invest in a faster sd card in the future.
I did all of this with my Samsung Galaxy S III stock ROM, you will obviously have to adapt to your circumstances.
When I finally installed CyanogenMod 13 (we don't want stock firmware, do we!?) things were a bit different.
With a wiped /data, CM is spending some time at boot populating /data and at a certain point it just give up, reboot and goes to recovery mode.
After several attempts I gave up and relocated /system in internal memory, now everything is fine.
I do know that /system is mounted as read only, but I noticed that emmc lifespan is defined as amount of read/write cycles, maybe suggesting that, unlike hard drives, reading is as detrimental as writing.
If that's the case I'd be most grateful if someone could tell me why in CM I cannot successfully relocate /system.


Can I uninstall security updates for rooting?

What Updates did you previously install ?
What Android Version are you on ?
What Device are you using ?

Samsung has a feature called Knox that is literally the fort knox of Androids, Root abilities on Samsung device's are rare.

For your device, someone may have a specific method of unlocking the bootloader or even using ODIN to flash a pre-rooted firmware.

For a successful root, it mainly comes down to...

Android Version
Device Lock Status
CPU Model
OTA Updates installed

Each area can stop you from getting a successful root.

The usual method for Samsung device's is to use Odin and flash a custom recovery, then from that you would install SuperSU or Magisk.zip files.

I need more information to help you any further.

  Notes :
     Samsung devices will not allow you to use some feature's on a rooted device... It is why many Samsung owners end up using custom firmware like Lineage ( A.k.a CyanogenMod )


Good idea to transfer all phone numbers from SIM card to google contacts?

I'm not going to answer if it's a good idea or not - you need to solve that for yourself :).

Having your contacts stored with Google Contacts will eliminate any duplicates (at least duplicates where you have the number stored in the SIM and e-mail in Google, or something like that) and allow you to manage/sync those contacts from anywhere you can access Google Contacts, like a computer.  You are correct that it will 'backup' your contacts so that if you were to switch phones or even carriers, you wouldn't have to worry about bringing your contacts as long as the phone you have supports Google Contacts (web or app).

Keeping your contacts on the SIM allows you to keep them from Google (if you're worried about privacy), and if you get another SIM-based phone, you can easily move them (provided you keep the same SIM).

Personally, having my contacts in Google Contacts has been great.  Easy synchronization, use photos from Picasa as contact photos, management from a computer... but you will have to decide for yourself which is "better".

You may want to see this answer to help you move your contacts from the SIM to Google Contacts.


This worked for my 5.0:

Stored the files in the Alarms folder (don't think this will be necessary)
Go to file with ES Explorer (or other file explorer)
Play the file with the built in media player of ES
Tap on settings
Set as ringtone and choose Alarm
Go to Clock > Alarms and use your new music file as wake up alarm

Probably there is a option (just once/always) for choosing a ringtone in the Alarm menu. I think, I clicked on always by accident. (clearing cache/setting did not worked out) But this will be a pretty simple work around ;)


Can the Whatsapp icon appear and disappear from someone's contact?

Yeah the contact apps have contact accounts. You can click options button and select contacts to display. Unmark WhatsApp as a contact source and it won't show up in contacts. Tried for my CM13 on Wileyfox Spark and it works fine


Picasa photos in gallery don't show up in photos app or google+ photos

Look here, they are all the photos  uploaded into your account. you can also check this. If they are on either site, they must also be visible in google photos app (if you are connected to the internet). Don't forget to turn on sync all photos in the google photo app, aftewards they will show up or they do not exist.


What are the security implications of using an app built "for debug"?

There aren't really any innate problems with running a debug app.  If someone grabs your unlocked phone, enables Developer Mode, and starts debugging they might be able to grab sensitive information from the app's memory slightly more easily — but that's not particularly realistic and easily countered with a lock screen.

Debug information will also make it harder to make use of security through obscurity, which we all know is not real security.  This obviously isn't even a factor when it comes to open-source apps, since they can simply inspect the source to find a flaw.

However, the specifics of what code paths you've added for debugging can definitely be security holes.  Maybe for testing and verification purposes, the debug version writes the user's password out to logcat when they sign in, for example.  There is a great deal of PII that could be exposed this way.

For an end user, all that you know is that it's probably more likely for an arbitrary app to leak information if it's a debug version.  Unless you are searching for it yourself, you're not likely to see it.  That's probably enough reason to avoid such apps — doubly so since a developer who doesn't know the difference between Release and Debug versions is probably not protecting your data very competently either.

Dan Hulme also made a good point in chat: A debug version probably won't be properly signed, meaning that it could be "upgraded" from a malicious source.  I would again presume this to be an unlikely occurrence, but it is another point against it.


Is there a way to disable "call from" when I use Google Voice?

Go to voice.google.com. Top right, click on Settings -> Voice Settings.  Go to "Calls" tab.  Turn Call Screening to "Off"


Firefox on Android, "Save to PDF" -- where does the PDF go?

The page is downloaded as a PDF in your preferred download location, which by-default is the directory named Download under Internal Storage. When successful, a notification is shown that the page has been downloaded and it can also be seen through Tools > Downloads section within Firefox.

If you do not give Storage permission to Firefox, Firefox confuses the user when trying to save a page. When my Firefox didn't have Storage permission and I tried to save a page, it just did nothing, as in no UI response.


How can I export all my open Firefox Tabs to a text file?

On Android system you can use Termux (No root required):

Navigate in Firefox to URL: file:///data/data/org.mozilla.firefox/files/mozilla/
Choose the link of ***.default folder of your profile
Choose the sessionstore.js file
Copy content of this file and save it in sessionstore.js file on local storage
Run the command in Termux to output your tabs urls:

cat ~/storage/shared/sessionstore.js | sed -n 's@{\"url\":\"@&\n@g; s@\",\"title\"@\n@gp' | sed '/^[:{]\"/d'

Or, this command to save your tabs urls in file sessionstore.txt on your local storage:

cat ~/storage/shared/sessionstore.js | sed -n 's@{\"url\":\"@&\n@g; s@\",\"title\"@\n@gp' | sed '/^[:{]\"/d' > ~/storage/shared/sessionstore.txt


Recovery mode device drivers not working in HTC Desire 616

Finally I might have a solution but I need your help guys. I need the images of all partitions (userdata, cache, system,expdb,rootm,blinkfeed, ebr2,logo, misc, sec_ro,seccfg,protect_s, protect_f, nvram, pro_info, ebr1, mbr, preloader) which is not a custom ROM but essentialy it is like a copy of your phone. I need to download them from someone who has the same firmware d616w and with his bootloader unlocked(I might be wrong about this last sentence).
Then I will flash all of them on my device, I will turn my device into S-OFF if it is not already and manually change IMEI, MID, S/N and other phone infos. Hopefully it will work, otherwise I m gonna use it as a brick for constructions ahah.


Found the settings under "Accounts and Sync" category.


I've exceeded my unlock attempts (10). Is there any way to unlock my phone?

If your sim card is locked then you can just remove it and put another one in.
If the phone itself is locked, you can do a factory-reset by using the recovery, hold power, home, volume-up until you get to the recovery screen and choose the factory reset option.


Where is the NFC element located in a Moto X?

You can check iFixit Moto X Teardown. Looks like it takes up most of the center of the back.


How do you handle a tablet where all screen input and keys have become unresponsive?

My Galaxy Tab 3 sometimes freezes without capability to manipulate the restart functionality, or the application Force Close functionality. Since it is a tablet, opening its case to remove the battery is not an available capability, unlike the occasions this happens on my phone, a Samsung Galaxy S3. This is a rare occurence; it has happened twice in recent memory to my tablet. This time the active application was the Kindle app, and it may have even been so when this occured last, several months ago. This time the tablet presents a blank screen, which is active, since it emits a bare shimmer of light. The screen feels slightly warm, indicating the tablet is active. I am uncertain of the specifics of the previous occurence, finding it totally unresponsive when I took it out of my bag on a flight, after i had pre-loaded books to read on that same flight.

I am unsure this is the optimal technique, but the similarity to the last occurence led me to experiment with just letting the battery fully expire. Then plugging it in to power up and reboot into a fresh session. It appears to have restarted properly. I have not witnessed either affected memory or corrupted files so far. The Kindle app seems to have all recent books stored and available.

TL;DR - manage a way to let the battery fully discharge. Plug in and start a fresh session. Check for damaged app or files.

UPDATE 2015/06/03 - This has happened again today, again on a day when I updated my Amazon Kindle app by downloading books. Except today, I downloaded books over 2 sessions. When I recall the first instance, Christmastime 2014, this seems also plausible, since I may have refined my download and search query for some additional downloads. The second instance of this (March 2015) I am unsure about. Now that I have a refined theory, I can experiment. However, this tablet was fully charged this afternoon, so it will be a day or more before I can attempt anything in order to fully discharge the battery.


A way to enable data encryption by default (device to be encrypted on first boot)

Concerning the asking of password. When resetting Marshmallow, if the stock recovery is in place, it decrypts the phone and on first boot it encrypts it but well obviously never ask you for a password to start android because these two fine are recreated which hold device password:

/data/security/password.key
/data/security/pattern.key

If you could have been using TWRP to factory reset and you had a pattern or device assigned to device and you've opted for require password to start device, seamlessly, on any ROM and even TWRP itself. The password will exist even after resetting. The stock recovery is the only one that deals with that pattern at first boot.


How to Right-click in Chrome Remote Desktop?

You can right click by using 2 fingers at once. This is the same for Microsoft's RD Client app for Android as well.


Display viewport only at the right bottom of the screen

What worked in the end was using the Xposed Framework and installing "One-handed mode" like explained here: How to get a one-handed mode on almost any rooted Android device.


You could install Titanium Backup and freeze the SuperSU app which provides root access on your device. I wouldn't recommend uninstalling it if you don't know how to get it back.


Your earpiece speaker may be dead. When you put your phone in speaker mode it uses different speaker(s). Some people use a bluetooth earpiece to get around this, but if that's not something you want to do then you may want to check and see if your phone is still in warranty.
Also, depending on your phone you can try taking a small brush and cleaning around your earpiece speaker. In some cases dust and other debris can collect and muffle the speaker, and considering how tiny these speakers and their speaker grills are (again, depends on your phone) it doesn'take much dust or debris to make it hard to hear. When i worked for Verizon this was a common problem that we encountered on a daily basis. Hopefully, that's all it is.

source: Roans answer in this post


Just a thought: setup a Google Gmail account, filter the important emails to be send to this Gmail account, attach the GMail account to your phone, and set up another alert when receiving an email from the Gmail account.


How do you remove pre-installed apps on a rooted phone?

Check out the "Barebones" page in CyanogenMod's wiki.


Installing a recovery and flashing your rom

Download your recovery.img or wahtever the name is to your fastboot folder.
adb reboot bootloader
fastboot flash recovery recovery.img
fastboot reboot recovery
Now use your recovery to flash your rom.

At this point you may not be able boot into your rom if you do not have S-OFF.But give it a try. If it works then forget the next few lines.

Copy the boot.img file from inside your rom and copy it to your fasboot folder.
adb reboot bootloader
fastboot flash boot boot.img.

Now you can reboot to boot into your rom.


How can I deal with "Low on Space" messages on my Android?

This timely post from Lifehacker may help... Were you the one who emailed them? ;)

What Should I Do When My Android Runs Out of App Space?

Here's the summary, in order of easy to hard:

Move Bigger Apps to SD Storage - currently requires Froyo (2.2). Navigate to
Settings > Applications > Manage Applications (or something similar). View the All Tab, sort by size. You can't do anything about the big hitters, namely Gmail, Browser and Maps will always be pretty big.
Clear the Cache, and Maybe Data, on Some Apps Similar to #1, navigate to Settings > Applications.
Clear Out Apps You Don't Actually Use Shouldn't this be #1? ;)
Android 2.2: Set Your SD Card as the Default Installation Location LifeHacker points to the Androinica blog how-to here.
Root Your Phone and Set Up Apps2SD Disclaimer: rooting may not be fun for non-geeks. LifeHacker how-to-root and custom firmware CyanogenMOD (also supplied by LifeHacker).

Of course some of the comments on the post are helpful as well. Hope it helps.


Package Install via Market sometimes fails and gives seemingly random error message

You can get 'Insufficient storage space' messages if you don't have enough space on the internal SD card for the market to be able to download the APK into a temp or data directory.  When you reboot your phone or exit from certain apps various caches/data directories are cleared, freeing up space on the internal SD card.  This is why this error appears 'randomnly' - because as you use and close apps, the amount of disk space changes.  There are several apps on the market that can force cache clean ups for you.

'Package file is invalid' can occur if you have disk errors or networking errors that corrupt the downloaded file.  This is why this error appears 'randomnly', as SD card file system issues or dropped/bad packets corrupting the file won't occur every time.  FYI, SD card file system errors are often a result of not unmounting the phone properly when connecting it via USB or by yanking the SD card from a reader without unmounting it first ("safely remove hardware" in Windows parlance)


Should I clear cache for Google Play Services or will an app misbehave?

Clearing cache for an app will never delete any important information, only data held to make loading images etc faster. Data, however, is often used to store important information.

If the app is using too much data, I would say that there probably isn't much harm in clearing it, but if the app doesn't store much data, there isn't much point.


I don't think this line of thinking would work. The Opera Mini experience is built on the premise of the client being able to connect to Opera's rendering server farms and having a web page that's optimised for mobile view being sent to your phone/device after being compressed in order to save data network costs.

I don't think modifying your hosts file would work on Opera Mini - Mobile and your default browser - yes, because they connect directly from your phone to the page you're trying to view.


Internet not accessible even though connected to local network using wifi

Did you try setting manually the IP+DNS, instead of relying on DHCP, as it does by default?

Wireless and Networks -> Wi-Fi settings -> [menu] -> Advanced -> Use static IP


turn off pitch correction in VLC when speed is changed

For VLC for Android, v. 1.7.5, the required setting is in the "Extra Settings" section under the "Performance" menu and is called "Time-Stretching Audio".


ADB Wi-Fi connection disconnects when device goes to sleep in Moto G 2014

So it seems the problem was with the settings of the device. Having a Screen Lock (even if SmartLock is enabled, and you are in a "safe location") disconnects ADB on device idle. Only way around it for me was to disable the device screen lock.


It is possible that the button itself is damaged.

The button is made of 2 metal foils (one is flat, the other is a bit spherical on top) and if you press it, the sphere bends to the bottom foil and the connection represents a press. On my old Galaxy Nexus, dirt got under and it stopped reacting. Once I opened and cleaned it carefully with a knife it worked as the first day.

Considering you have the opposite problem, it could be the case that the spherical foil is somehow bent to keep sticking to the bottom even when you release the button.

Since this requires you to open up the device, I suggest this as the last resort unless you ran out of other options. (Or send it in for a repair).


why i can't use all my sd card space on Apps?

It is because since older versions of android(i don't remember which exactly) its not possible to install or move apps to SD CARD without root.

All apps will be installed in internal memory by default however if you do root you can move them to your SD Card using apps(there are many) and at same time you will be able to delete useless pre-installed apps that is using your internal memory space.

Also i just noticed that u have 370MB of cache data, that data is near useless, since its just used to make things load faster but eventually it start to use too much space on your drive so you can safely delete the cache of all your apps, you can use apps for that...I use Cache Cleaner


It looks like I may have found the problem.  The latest update from AT&T (4.5.141.MB860.ATT.en.US) which they pushed a few weeks ago appears to not handle a "Forever" DHCP lease properly or my router does not properly handle a DHCP lease renewal when configured for "Forever".  One does have to wonder why the phone was renewing a lease which had no timeout, and especially after only 150 seconds (allowing for the 30 second network request timeout).

Coincident with the WiFi dropping, the logs show the phone tearing down the WiFi service and restarting it after a failed lease renewal request.  Because the router has always had a "Forever" lease time, my money is on the update introducing a bug in the phone.

From my phone log (note there's a large time between the request and the renewal only because the log captures only a couple of minutes, so I had to capture a number of small log fragments before I tumbled to the DHCP connection):

03-27 20:46:25.928 D/WifiStateTracker( 1637): DHCP request started
...
03-27 20:46:27.931 D/WifiStateTracker( 1637): DHCP succeeded with lease: -1
...
03-27 21:16:23.938 D/WifiStateTracker( 1637): DHCP renewal started
...
03-27 21:16:53.947 D/WifiStateTracker( 1637): DHCP renewal failed: Timed out waiting for DHCP Renew to finish
...
03-27 21:16:54.008 V/WifiMonitor( 1637): Event [CTRL-EVENT-STATE-CHANGE id=2 state=8 BSSID=00:00:00:00:00:00]
03-27 21:16:54.018 V/WifiStateTracker( 1637): Changing supplicant state: COMPLETED ==> DORMANT
03-27 21:16:54.018 I/wpa_supplicant(12515): CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
03-27 21:16:54.018 V/WifiMonitor( 1637): Event [CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys]
03-27 21:16:54.018 I/wpa_supplicant(12515): CTRL-EVENT-STATE-CHANGE id=-1 state=8 BSSID=00:00:00:00:00:00
03-27 21:16:54.018 D/WifiStateTracker( 1637): Reset connections and stopping DHCP
03-27 21:16:54.028 V/WifiMonitor( 1637): Event [CTRL-EVENT-STATE-CHANGE id=-1 state=8 BSSID=00:00:00:00:00:00]
03-27 21:16:54.048 W/Smack/Packet( 2186): notify conn break (IOEx), close connection
...
03-27 21:16:55.084 D/WifiStateTracker( 1637): Disabling interface
03-27 21:16:55.088 D/NetworkStateTracker( 1637): setDetailed state, old =CONNECTED and new state=FAILED

Since changing my router to use a two week DHCP lease, the phone has had a stable WiFi connection for an hour and a half, which is considerably longer than I have seen since I started monitoring this condition.

Assuming there are no further problems, I will accept this in a couple of days, indicating that the problem is indeed resolved.

(BTW, the log collector I used is "Log Collector" by Xtralogic Inc, and "WiFi Analyzer" is by farproc).

Update: 2012-03-29 AM: The root cause seems to be an inability to renew a DHCP lease - changing the lease time to 30 minutes caused the connection to drop precisely 30 minutes after connecting the phone to the router.

Update: 2012-03-29 PM: That there is a general problem renewing DHCP leases is born out by testing all day with a short lease time; every (or very nearly every) attempt at renewing the lease fails, and then disconnects and reconnects the WiFi service. Now knowing precisely what the problem is and what to search for, it may be that this is a long-standing problem with the Android WiFi service, present since 2.2 and still a problem even in 4.0.


Twitter keeps showing a notification about the same Direct Message

This seems like a bug in one of the apps you use. Best you can do is report it to their developers through the Play store.


The reason it is bootlooping is probably because cyanogenmod was installed and it isn't for that device.

There should be serial/model number on the back of the device. This is a requirement (AFAIK) by the FCC.

  The certification mark is a stand-alone logo (as shown above) for the part 18 class of devices while, for the part 15 class, along with the logo, the label should display other data viz, the trade name of the product, the model number, and information whether the device was tested after assembling, or assembled from tested components.

You should be able to use that to figure out what device it is. Then you can see if you can find a version of android for it from that.


Red triangle with exclamation mark on boot, but reboots after second try. How to solve?

That's normal. The HTC stock recovery behaves like that. It is different from a custom recovery, you can't do anything with it. The stock recovery does only install the OTAs you receive officially. No need to worry about it.


Clockwork Mod. To flash or not to flash?

This is entirely up to you, and your personal preference.

There is one thing I would suggest though: do not use ROM Manager! It has a nasty history of damaged devices.

I would suggest that you go with either CWM or TWRP, if it is available for your device. I would suggest you flash it using fastboot, if it is available on your device.

If it isn't, then you should see forums such as xda-developers for info on how to flash recovery images.


You did it wrong I guess. Despite all the tutorials you found online, I wonder how you missed the right one : There's a "safe" uninstall feature within Kingoroot app. This removes completely the app and the binaries from your device.

Open the app
Click three dots upper right, find settings menu.
Click "Remove Root".

Your device will be rebooted and root should be removed.


I assume the USB connection isn't the main point? You could look into a TRRS splitter to fit your 3,5mm plug into the headset jack on your phone. Here's one example, just to give you an idea of what I mean.

This way you can use a normal recording app to capture analog audio from your soundboard. Just be careful to check the levels since the jack isn't a line in jack, but a mic in jack.


Contact or application-specific vibration "tone" (pattern)

Using the app, Locale, you can use the Contact condition to spot the caller and the Notification plugin action to use a vibration pattern.

There does not appear to be a contact-specific configuration built-in, even in Froyo.


Nexus 7 (2012 Wifi) Custom kernel bootloop

Build with module it was a working path.


Change IMEI number to obtain tablet data plan?

This would undoubtedly be a violation of T-Mobile's terms of service.  To do so, though, you would need to create a custom ROM and modify the ro.serialno system property.  Alternatively you could try to modify Build.java and pass in a different value to Build.SERIAL.  It's unclear whether that's how T-Mobile is retrieving the IMEI number though.


There is an app named lookout that can track your device for you using geo - coordinates, and can remotely wipe all data from your device, using mylookout.com from your pc.

Wheres my droid will make your device ring (if not on silence). For more information, you can visit this link. If you have anymore questions, I'd be more than happy to answer them.


Google search widget has bad quality images

The whole reason for having a low resolution picture to begin with is so that you save on data costs. Why load 10 images in HD when you actually only need one?

So load 10 in low res and then high res for the one you want. As usual there should always be an option to chose what quality you want just like BBM which allows you the option to automatically accept HD images.


When using the methods reported by @Izzy, none of them solved the issue on my Galaxy On7, rooted to work with Android Pie (9), LineageOS 16 flavour -- using an SD Card as adopted storage.

Here is what I did:

After enabling Developer Options, I checked the option "Force Allow apps on external"
Cleared the play store data;
Rebooted the device

Now all apps on playstore, which I had forcibly moved to the sd card with Titanium Backup, are able to be updated with no issues.

Hope this helps


Right swipe on contact defaulting to internet calls

Mr. Portela has it right, and I figured out a way to solve the issue more quickly:

Select the misbehaving contact.
Long press the 'default' email address.
Select 'Clear default'.

Voila.

I'm not sure what will happen when you try to email these contacts from now on, but at least calling works as intended.


Any way to kill a crashed app on a non-rooted CM11s device?

Edit

Settings > Apps > Running

Once here, you can manually kill the app's processes. Also, there is a button at the top called "Show Cached Processes". You can also remove the cached processes from there.

Note: Removing the cached processes will kill the (cached) process of course, but the next time you launch the app, it will again call the necessary initialization functions to work, using more clock cycles. It is preferred not to kill the cached processes. But if you there is an app that's behaving weird, then go ahead and kill it!

Original Comment

open the app and hold press the back button... it should kill the app... also, why not disable the app that's draining your battery?


How to remove KDE Connect app icon from Notification bar?

Excerpt taken from KDE Connect – New stuff 0x3:

Android Oreo introduced some restrictions in regard to apps running in the background. In the future in order to be able to run in the background KDE Connect needs to show a persistent notification.
To hide the notification you need to long-press it and switch it off. Other notifications from KDE Connect are unaffected by this.


If the Admin leaves a WhatsApp group, how is the next Admin chosen?

It's purely random

From WhatsApp FAQ

  If you are the only group admin and you exit a group, a participant is chosen at random to become the new admin

(Emphasis Supplied)


This is due to a bug in fsck.

 # fsck.vfat -v -a -w /dev/sda1

The above command automatically write changes to disk.

The dirty bit is set and cleared in the kernel, when mounting and unmounting a device;

or if its not working try this HDD Low Level Format Tool.This will help you format microSD completely.


Where does Google Chrome automatically save pages?

This would be in Chrome data, which means you need root and on my device running 8.1 stock this seems to be it

/data/data/com.android.chrome/app_chrome/Default/Offline Pages/archives/ where you have .db (databases)

In one of the databases prefech_store, I could see the information pertaining to off-line pages

This may not help you as HTML/MHTML pages are not available directly for your purpose (searching for those in the app data didn't turn up any which implies they are stored in databases only)


From Naked Security by Sophos (it's detected as Andr/Koler-A),

  Booting into "Safe mode"

  Method 1

  (Reported to work on Google devices and various Android Open Source Project, or AOSP, derivatives like CyanogenMod.)

  Press and hold the power button as you would to power down or reboot.
  A menu will pop up.
  Tap and hold the “Power off” option.
  If nothing happens try the same with “Reboot”.
  A dialog should appear offering you to reboot in Safe Mode.

  Method 2

  (Reported to work on Samsung Galaxy S4.)

  Power down.
  Turn on and repeatedly tap the soft-button for “Menu.”

  Method 3

  (Reported to work on Samsung Galaxy S3 and others)

  Power down.
  Turn on, then press and hold Volume Down (Galaxy S3 and others), Volume Up (HTC One and others), or Volume Down and Volume Up together (various Motorola devices) when the vendor’s logo appears.

  If you have managed to select Safe Mode, you will see the text “Safe Mode” at the bottom left corner of the screen.

  To get out of Safe Mode, try simply rebooting.

  If that doesn’t work, try rebooting using one of the button-press options listed above, starting with the one you used to engage Safe Mode in the first place.

  What to do when "Safe mode" is active

  This variant of the malware installs itself under the name BaDoink (apparently the name of a well-known online porn service), like this:

  After booting into Safe Mode, third-party apps will no longer show up on the Apps page, as you can see here:

  Go instead to the Settings menu and choose Apps:

  This will bring up a list of downloaded (third-party) apps, including the Koler-infected BaDoink:

  Tap on BaDoink; this won’t run it, but will open up the program’s App Info screen:

  Tap on Uninstall, and you are almost home:

  Choose [OK] to uninstall and you are done.

  You may now reboot out of Safe Mode.

  Hope this helps!


WiFi Error: "Failed to connect to network"

Do you have custom recovery installed? I have had this problem twice on a Galaxy S2, and what fixed it for me every time was running a permissions fix from recovery mode.

If that doesn't work, try deleting your WiFi config file. Not sure what it is on the Nexus, but I'm guessing it'll be something along the lines of /data/misc/wifi/wpa_supplicant.conf or /data/misc/wifi/wpa.conf. Obviously you should make backups before deleting anything. Note that you'll lose all your WiFi settings if you do this.


"Google keeps stopping" after Android Oreo update

There is some critical error for the new android Oreo (for me is nexus 6p) which make a system crash on the desktop (google now launcher) and on settings (you can't open app list). It is can be created by any of your applications which you need to find. So only way to remove the app, in this case, it is to use a google play application or maybe some other launchers. For me, it was "6 Minute English". I find it via installing nova launcher and on the common app list, the application was shown without a logo,  with green robot image instead.


How do I hide reviews on Play Store made by my phone contacts?

Go to People section in Google Play Store:

And unfollow everyone there.

If that doesn't help, go to Settings->Applications. Remove access to Contacts for Google Play Store, clean its Data and Cache, and reboot your device.

If that doesn't help, do the same for Google Play Services.

If that doesn't help, I doubt there is much you can do left. Google Play is not a very customizable application, unfortunately.


Why does Google+ Messenger deliver messages with long delays?

Google+ Messenger does require the Background data checkbox to receive messages/updates while it's not the active app. However your messages should be sent instantly since the app would be active then.

Are you experiencing delays with other messengers using background data as well? e.g. WhatsApp

A good discussion about background data, sync etc can be read here


Mute Phone Audio when Headphones are Unplugged

I am using Macrodroid and Automate to demonstrate what you ask.

With Macrodroid

You will need to create 2 macros.

1st macro: Headset plugged

In the Trigger tab, select Headphones Insert/Remove, then choose Headphones Inserted followed by Any.
In the Actions tab, select Volume Change, then give the appropriate permissions. Set the level of each audio stream (see below picture on the left).
Give the macro a name, then save it. It will look like the picture on the right.

2nd macro: Headset unplugged

In the Trigger tab, select Headphones Insert/Remove, then choose Headphones Removed.
In the Actions tab, select Volume Change, then give the appropriate permissions. Set the level of each audio stream to 0 (see below picture on the left).
Give the macro a name, then save it. It will look like the picture below on the right.

With Automate

In the Interface section, select "Wire headset plugged?", then link its IN with the OK of the "Flow beginning" block.
In the Camera & Sound section, select "Audio stream mute state" twice.

Click on the first block, set the state to Unmute, select an audio stream, then click Done. Link the IN to the Yes of the "When wire headset plugged" block, then Link the OK to the IN of the "When wire headset plugged" block.
Click on the second block, set the state to Mute, then select an audio stream. Link the IN to the No of the "When wire headset plugged" block, then Link the OK to the IN of the "When wire headset plugged" block.

It will look like the image below. Give your flow a name then save it, then click on Start.

Note: I have selected Music stream for this example. Only the music will be muted/unmuted. Add more blocks for the other audio streams (voice call, alarm, system, etc).


How to configure HTC Desire for 3g connectivity in Peru?

In order to connect to a given 3G/3.5G network, your phone must support the correct band.

Based on the sparse information I was able to gather, it seems that Claro is using bands II and V (1900 and 850)

It seems that there are at least three different models of the HTC Desire, of which the HTC Triumph / Desire US A8182 and HTC Desire Telstra A8183 support bands II and V.  The third model, HTC Desire A8181 supports bands I and VIII instead.

If your phone has the correct APN, supports the correct bands, and 3G is not disabled it should just work.


How can I check whether an app is installed on internal storage or the internal SD?

Why would you have to look in the app settings?  Just determine its location via certain organizational/explorer apps (ES Explorer comes to mind), and voila, where it is—that is your answer.


How to disable vibration when typing on HTC One X?

Go to Settings > Language & keyboard > HTC Sense Input and turn off the option of Vibration feedback. It is present in both HTC Sense 4 and 5. It is even described in this YouTube video.


Is there a way use an RDP to configure a continuous offset from GPS calculations?

Those offsets are normally used in differential gps. A fix point (station) knows it exact location (from manual measurments), calculates from the gps data the requred offset for correction and send this (quasi constant) offset (ex. 2.5m SW) to you.
The  assumption is that if you are close to this station the atomospheric error (=offset) is valid also for your position in some distance.

Im not too familiar with android, but you could send manipulated D-GPS data maybe?

For radio those are send with RTCM (Radio Technical Commission for Maritime Services), (you can get down to 2cm accuracy) - for mobile phones you need to stitch to Ntrip (Networked Transport of RTCM via Internet Protocol): http://www.rtcm-ntrip.org/home most of them are non free/paid, so you need to look around (if you really want there a ways to make your own low cost server (raspberry pi..))

would you still need offset if the accuracy is already very good? Boosting accuracy seems easier!

Have a look at https://play.google.com/store/apps/details?id=com.lefebure.ntripclient
==> ACCESS_MOCK_LOCATION - Used for routing external position data to other applications. but this solution has also it downsides :-(


You can try repair option in Sony PC companion or SUS(Sony Update Service). If none of this works try the steps given below

Download the ftf file from here.

Using flashtool flash the ftf. The tutorial on flashing can be found here


The Dolphin browser has an option to turn off images.  I believe most versions of the stock browser have this capability as well.  The 4.0.4 version can disable images via Settings ->Bandwidth management -> Load images, and I'm pretty sure that the Gingerbread browser had this capability as well.


Depends on the type of encryption, if it's only 9 bits, it wouldn't take long to crack the encryption with the right tools, but to be honest, unless it's some REALLY valuable data, just format it. If you messed up the encryption though, it could have some bad sectors I wouldn't trust it for any data handling tasks.


How to disable additional app permissions?

You can try using NoAutoShortcut if your phone/tablet is rooted and Xposed framework installed. It is an Xposed module that prevent apps from creating shortcuts.


How to automate actions in certain apps?

By default regular Apps can't control other apps.

There are two exceptions:

If the app is a system app (signed with the same cryptographic key that was used to sign the OS itself)
An app can request access to the "accessibility services". Using this service  an app can interact with other apps.

Note that Google is currently (mid 2018) restricting the accessibility service usage. Only apps that use it for legitimate purposes are allowed (helping disabled people to use an Android phone. As you can imagine controlling third party apps is not a legitimate purpose for Google's perspective.


Can Android phones restrict background syncing to secure WiFi connections?

In general, you should never assume that any internet connection is secure. Not even if you owned the hotspot. Internet is built under the assumption that intermediary links are unreliable and not necessarily trustworthy (not even your service provider or the backbone operators should be considered trustworthy). That's why we have developed various authentication and encryption protocols which can ensure secure communication through these untrustworthy channels.

In short, use HTTPS or SSL when accessing informations that you don't want anyone snooping on and do not use apps that do not use HTTPS/SSL. Gmail always uses SSL when communicating with Google servers, although last time I checked not for Calendar or Contacts, though this may have changed since then.


This is the most recent build for the Android Open Kang Project, which is ICS roms based and improved upon CM9. I have used these for my EVO and they are spectacular thus far. They're still beta, and while force closes are expected, they are few and far between. These builds have been great!


Gallery is displaying three, sometimes even four copies of the same file - why?

Though it's not the identical situation, the solution which worked out for I'm seeing duplicated images and videos on Gallery might apply here as well:

Go to Settings→Apps→Manage Apps
Select the "All Apps" tab
Find the Gallery app, open its entry, tap "clear cache"
Do the same for the Media Storage app
Have the Media Scanner running again. This can be triggered by either

a reboot of the device (ugh!)
unmounting/mounting the external SDCard if any (hm...)
attach the device to your PC via USB, optionally copy some file to it, detach it again (ok...)
for repeated use, take a look at apps like e.g. Rescan Media, Scan Media, or SDrescan (yeah!)

Check if the duplicates are gone. If not, repeat everything, but this time additionally select to "delete data"


My computer doesn't recognize my phone, neither on ubuntu nor windows

This is one of those things that can be tricky to fix I think, because there are multiple points of failure (getting 2 different hardware devices to communicate over USB through 2 further operating system layers). But as AndrewT mentioned, my guess would be the drivers.

If I remember correctly I've had several episodes before of playing musical drivers + USB cables. I'm pretty sure what ended up happening most often was I'd finally get a successful connection upon switching cables (after focusing on reinstalling drivers over & over for a few hours). I also recall one time, the solution was switching from the USB 3.0 port I was using to a 2.0 port which fixed it instantly after hours of madness trying various drivers and cables.

You said you've tried a few of each of those though. One thing to keep in mind is it can be surprising just how picky your phone can be in terms of the cable you use. A couple times I've tried at least 4 or 5 different (microUSB) cables, switching back and forth and alternating with yet another driver install only for it to keep failing. Then when I eventually desperately dug a spare cable out from the couch cushion or something, it suddenly worked like a charm. I confirmed it on those occasions too by going back to each of the previous cables once I was 100% sure everything was indeed working, and sure enough, they all refused to work; only the weird, thin, chinese crap cable from who knows where seemed to do the trick. Android can be extremely picky, that's sort of the gist of what I've seen anyway.

Your "Further Info" makes me believe even more that it's probably your drivers though, if you know for sure that the connection stopped working following a driver update, and knowing that it DID work prior to that. The final thing I can offer is that I've ran a few LG phones over the years too, and I think they're particularly bad with fragmenting the driver situation with their own driver packages & LG-branded "Control Center" or "USB Tool"-type apps. While the android Universal Drivers have generally worked for most of my phones most of the time, I want to say you should try looking for any & all alternative drivers out there, especially if you can find some from LG's site specifically - that might be simply the only thing that will work, while all of the other usual "Universal" android software packages out there won't (for whatever reason).

But yeah... keep experimenting, try as many different connections as you can in The Trifecta (drivers, cables, USB ports), borrow some friends' cables or computers if you have to. I bet a single lucky one of them will suddenly work like nothing was ever wrong, and likely for no reason, as frustrating as it is.


Does Forcing GPU Rendering Affect Battery Life?

Almost all updated apps have GPU Rendering coded into the build. The reason you have an option under developer settings is simply to test the feature as a developer.

Unless you are ok with the minimal performance increase at the cost of battery life keep it off, if an app can utilize the function it will.


How do I move or copy files from /storage/emulated/0?

Well, after much testing, found the destination MicroSD card had file structure corruption, causing the problem. It was resolved by mounting the MicroSD card on a PC, copying all the good files to a desktop folder, running gparted to unmount and reformat the MicroSD card, and copy the files back once the formatting completed.

Rooting was not required to access /storage/emulated/0 .


How to install Google Play services on an Android 7.0 emulator?

I would suggest using OpenGApps and ADB, but there's probably a better solution.


Try disabling the notification then restart your tablet and see if it reappears:

  Go to Settings > Application Manager > All > Google Services Framework and then uncheck "Show notifications".

Are you rooted? If so, and if disabling the notification doesn't work, try freezing or uninstalling the update apk:

  Use Root Explorer or ES Explorer and go to phone memory system/app/ and delete or rename UpdateCenter.apk. Alternatively, you could freeze this application in Titanium backup application.

You could also try modifying your build.prop file to trick the tablet into thinking it's already updated (root required). This was also mentioned in an answer to a previous question.

  To prevent the update notification, you will probably just have to
  change the build.prop values. So, change:

  ro.build.description=voles-user 2.2.2 FRG83G 91102 release keys to

  ro.build.description=voles-user 2.2.3 FRK76 185902 release keys

  and

  ro.build.fingerprint=verizon/voles/sholes/sholes:2.2.2/FRG83G/91102:user/release-keys to

  ro.build.fingerprint=verizon/voles/sholes/sholes:2.2.3/FRK76/185902:user/release-keys

Note that this quote is referring to old software versions and that the ro.build.description and ro.build.fingerprint lines will need to look different for you than those quoted. Check out this answer for more information on making such a change.

For me and my 2012 N7 I just lived with the notification until I couldn't stand it any more, then I just upgraded anyway.


How to sync Thunderbird calendar on laptop with calendar on Samsung Galaxy S III

Have you considered using the Google calendar?

As far as I know you can sync the Samsung S III and the Thunderbird Lightning calendar with the Google calendar.

Samsung SIII:
http://www.samsunggalaxys3forum.com/forum/samsung-galaxy-s3-help/1278-samsung-s3-s-calendar-not-syncing-google-calendar.html

Lightning:
http://www.vikitech.com/7955/sync-google-yahoo-windows-live-calendars-thunderbirds-lightning


There should be a page in the settings app called Accounts. All the accounts stored on the device will be listed there. To remove an account, tap on the account name and then tap the remove account button

See this link for more info Add or remove an account on Android


Retrieve private mode pictures from Samsung device after factory reset

I once had my device reset (not exactly the factory reset though, my device got rebooted by itself and it got reset). As it's a kind of reset, all of mobile settings had been reset to default. Just for the sake of trying, I have enabled (reconfigured it, as if it's the first time) the private mode and provided the same pin, I have set earlier. Surprisingly all of my older files have appeared under the private section.

I'm not sure if this method works for a factory reset. But sure, it's worth a try.


How to create contacts on SIM card/internal memory?

Just a suggestion: have a look at MyLocalAccount from FJ Softwaredevelopment.

  This app does represent a local contact account. This is helpfully for devices without local contact account (f.e. Nexus series) if you don't want to sync your contacts with Google servers. These contacts can be synced then f.e. with MyPhoneExplorer to your PC.


samsung galaxy note pro 12.2 won't play videos in youtube app without stopping

I have found a solution to fix that.
I went to system settings > motion control and there I had "video set to pause when looking away". After disabling that it is not auto pausing anymore.


Yes, as far as I remember, Google Music is incompatible with Google Apps.
Have you tried using a normal Google account? I know, huge pain in the ass to use another account, but I think that might be the solution :/


Why doesn't BOINC use the CPU power fully on my Huawei P9 lite?

Yes it is true, the Huawei P9 lite has a Octa core CPU, however not all 8 cores are the same. Instead it follows the ARM BIG-little concept:

The 4 "BIG" cores (2.0GHz) are dedicated for maximum CPU speed. They are optimized for maximum performance (at cost of power consumption).

The 4 "little" cores (1.7GHz) are optimized for minimum power consumption. They are pretty slow compared to the BIG cpu cores (more than the 15% the cpu speed comparison indicates) as they are mostly used when the phone is in stand-by mode and does not have to compute much.

Therefore it is not unusual that only 4 of 8 cores are used. You should use a system info app that displays the current (not the maximum) CPU clock speed of all 8 cores. You should see that 4 cores work at 2.0 GHz - so the BIG cores are used.
For my device the app CPU-Z works and displays the clock speed (the refresh speed is not very high so you have to wait some seconds).


How to show the recent apps in the Overview button?

My old android 4.4 phone had me press and hold the home button, while that third button would pull up a menu. I believe that was how things worked in Android 4.4 days.


Difference between Samsung Galaxy I5800 and I5801

Besides a few visual differences, the look to be the exact same device. The only differences I see between the 2 spec sheets is the dimensions and weight.

I5800 Specs
I5801 Specs


Nexus 7 2013 screen won't come on. When to give up?

This is hardware damage. Your local electronics repair shop can probably replace the screen if you would like. The manufacturer is a possibility too, but it will be expensive.

As for recovering data, most of what you will need to save is stored to the SD card (emulated most of the time), and you said you could view the internal storage. Save whatever you feel you want (always downloads folder and DCIM). Most other data is saved to the cloud by Google and can be automatically imported into a new device.

If you were able to access ADB, you can take a full system backup using the backup command. When it requests access, tap the bottom left corner of the screen after unlocking the screen as if it worked correctly. It's okay if this doesn't work, what you can already access should be sufficient.

You're lucky. Most people cannot access the internal storage when this occurs.

As for wiping the device, you have access to the screen! Navigate to Settings-> Privacy -> Factory Reset. This will delete all data on the phone.


Samsung has some restrictions hardcoded directly into the kernel. These things differ per device, per kernel/firmware, and are a real drag to work with, or around. Try a different firmware.


How do I find out which number an SMS is from, out of all the numbers associated with the sender?

In my LG optimus one running gingerbread, I can open a message thread and long press on an message. This pops up a list of options and if I press 'view message details' I get details like from, date, time. The value displayed for from is not the contact name rather it is their number.

Alternatively, instead of long press, short press on the sender's name in the message gives an option to call and when I do so and quickly disconnect, I can see the number which is called, which is the number the message came from.


Where is my ROM backup made in recovery mode saved?

On your SD card (external, if available), a directory named clockworkmod/backup will be created, and on successful ROM backup inside that your nandroid backup lies. If the backup folder is not present inside the clockworkmod folder, it seems you have not taken backup successfully. In that case, try to take a complete backup using CWM properly.


How can I store Android apps on my SD card?

This is a feature that requires Froyo, so unless you have a Nexus One you'll need to either root your phone (which you've already said you don't want to do) and install a Froyo ROM or wait for your manufacturer/carrier to issue you Froyo in an update.

Either way, moving apps to your SD card is pretty straightforward. Go into Settings, then Manage Applications. There you should have the option to move your apps to your SD card.


no incoming messages shown on my mail box

You don't indicate a specific version or email type (Gmail has a distinct solution), so I will recommend this article from Abhinaya Prabhu at Gadgets To Use.

Enabling Unread email Count Display


Is it possible to use icon packs with the ASUS launcher?

In the descriptions of the icon packs is usually specified for which launcher these can be used. (Not every Icon Pack is compatible with every launcher)

Most preinstalled launcher do not provide support for icon packs at all. If you want to use icon pack you have to read the description and change to a corresponding launcher.


App install failed but files are still filling up the phone

Answer from the comments, as OP/answerer disappeared:

Browsing the device from a connected computer, those files could be found and deleted.

Unfortunately, Rick missed to say where he found them. So I include some clues where they might have been, together with some reason. These items include places to look for left-overs following even a successfull uninstall:

/data/local: That's where Google Play downloads .apk files to before installing them. As this directory also is accessible "publically", this is the most likely place for the OP's case.
/data/data/<package_name>: unlikely, as it requires root for the user being able to access it – but that would have been the place the app would be installed in
<sdcard>/Android/data/<package_name>: another candidate, again unlikely: while publically accessible, data here are usually placed by the app itself. Not being successfully installed, and neither turning up in the app drawer, the user couldn't start the app – so it couldn't place stuff here.
<sdcard>/<some directory>: same as previous point. Some apps place stuff in different places, which then does not get cleaned-up automatically on uninstall.


How can I decrease the text size or button size in notifications area?

What you are asking most likely cannot be done (at least easily, anyway). Those buttons might be controlled by the system UI or the app creating the notification. You can try your System Settings > Display > Font size, but this will alter the font size on everything.

Alternatively, here's an easier fix- tilt the phone to landscape to widen the notification window.

After installing the K-9 App for Android, I find that my notifications on my Galaxy S3 are a bit different. Can you confirm that you have the Delete button set to show in the settings?

(Click image to enlarge)


Update heavly customized but stock rom Nexus 5 keeping data?

You don't need to disable anything :-)

Step-by-step guide:

Update your recovery to the latest version
Download this 4.4.3 update and SuperSu
Place these files in sdcard
Boot in recovery
Wipe Cache and Dalvik Cache
Flash 4.4.3 update and SuperSu (~15/25 mins)
Reboot
Re-install X-posed framework from its installer
Re-install custom kernel

Now you have 4.4.3 and all of your customization without losing data ;-)


Using Laptop's internet on Android Phone

Turn your laptop into a WiFi hotspot. See Turn Your Windows 7 Laptop into a WiFi Hotspot with Connectify as an example. In a GNU/Linux system, use hostapd for this purpose. (Actually, if you don't like the idea of writing a configuration file for hostapd, the popular NetworkManager tool also supports managing an AP now, but this is not available through its GUI tools; it requires a manual tweak in its configuration file for mode=ap. ">Reference in Russian.)

Then use WiFi from your mobile phone to connect to the laptop's WiFi.


The UI lag is down to a number of things such:

Too many widgets (delete them, home launcher has to redraw screen upon closing the app drawer)
Home launcher - some redraw better than others (switch to different launcher)

Animation turned up to the highest value (i.e. turn it off), in ICS+, it is as simple as found in Settings > Developer Options:
Window Animation Scale
Transition Animation Scale
Animator duration Scale (JellyBean)
Force GPU Rendering (If that's ticked, it may not have any effect!) depending on:

the kernel version
GPU driver in context of kernel space
and the GPU driver itself, for example, Adreno*)

CPU (Important!!) Are we talking about old ARMv6 chipset or the newer ones that has either dual-core or quad-core?
What Android version?

Older Android versions below Honeycomb, did suffer from some "janky" effects in terms of graphics redraw, more often than not, the chip-set was older and likewise for the kernel as well, which did not have the native Adreno graphics driver.

What happened in ICS upwards, was, Android took advantage of the native Adreno graphics drivers built into the kernel which was dynamically linked with the user-space Adreno driver that comes as standard and was found in kernels 3.x+ upwards, and also in general, in newer handsets since ICS was launched.


How do I install Google voice search on a rooted gb custom rom?

In Android 4.1+ (Jelly Bean), it was merged with Google Now.

But Google Now isn't available for 2.3 (Gingerbread).

You have to search & download the last apk-File of voicesearch.

P.S.: If you have "Connections Errors / Server-Problems": Try reset the cache of the app.


From Android Developer blog

  ....we even extract the color of the dot from your icon.

From Stack Overflow, Is it possible to change the notification Dot's color on Android Oreo, accepted answer says the same with support in comments saying that it changes with icon design

So, not possible


Droid Bionic screen won't auto shut off when plugged in

Check to see if "System Settings / Developer options / Stay awake" is checked.  It's intended to give exactly that behavior ("Screen will never sleep while charging").


What could cause the camera to turn on automatically while the phone is in standby?

Not exactly a solution, but this seems to be part of the problem:

  Launch Camera directly from lock screen

  Time is often of the essence when trying to capture the perfect
  picture. The Galaxy S5 lets you bypass the lock screen to snap a
  picture. Simply swipe the camera icon up (in the lower right hand
  corner) and you’ll launch directly into the camera app! If this
  feature isn’t turned on you can do so by:

  Go to Settings > Lock Screen Check “Camera Shortcut” You’re done! Even
  if you have a pattern or password lock set up this will let you take
  pictures without unlocking your phone.

How this is being enabled is anyones guess.


RemoDroid is the answer.
Works through WiFi Direct.
Works on older phones by using older versions  (0.15.4 worked on my 4.4.0, same version installed on both).
Not bluetooth, but works.
Thanks Robert for showing the way


Unable to accept SSL certificate (k9mail)

The problem was resolved by re-installing k9mail from scratch (the previous install, which exhibited the error, was from installed using Titanium Backup, from a backup on another phone).


Can't set Android emulator date - stuck on 1/1/1970

I use Eclipse Oxygen.3a Release (4.7.3a)
I had the same problem.
I resolved checking "Snapshot" in Emulator Options (in Android Virtual Device Manager).
When you launch the Emulator you'll see your current date and time.


Sync issues Samsung Galaxy Tab 10.1 on MS Exchange mail account

It maybye does make any sense but firmware update buildnummmer htj85b p7510xwkl1, fixes this problem on Android 3.2. Because we are based in The Netherlands and the original question also originated from here, i think a localization problem????


Is there a way to receive my SMS messages on my desktop?

You might wish to run a search on Google Play. One good choice will be Airdroid, which gives you a full remote maintenance suite. And of course you can send/receive SMS using any browser you like.


Show current SSID under WiFi indicator in Notification panel

I think android version is not the same anymore as on the question but on 7.0 (Nougat) if you pull down the status bar using 1 finger you don't see the wifi SSID (1st picture) and if you use 2 fingers you can see more icons and details (2nd picture), including the SSID. See pictures (on the same fone). (obs: pulling with 1 finger and pulling a 2nd time is the same as pulling with 2 fingers)


Samsung Note8 wifi issue (connectivity.samsung.com.cn)

The domain samsung.com.cn is just an alias of samsung.com/cn. It is the Samsung domain for China. The fact that you bought the phone when you were in Hong Kong validates it.

connectivity.samsung.com.cn is a subdomain that your phone checks when you're connected to WiFi or mobile data to know if it is able to "talk" to the mothership (in this case Samsung servers). Type the URL in your browser and you will get Ok if the link is established.

So when you are connected, your phone establishes a link with Samsung servers (just as it does with Google if you have Play services installed). Your phone has not been exposed to hackers but is calling home possibly to check if there are updates from Samsung for your phone.


Does Android's Full Filesystem Encryption also Encrypt the SDcard?

Android provides the capability to do filesystem encryption, but it's up to the vendor who builds the firmware for your device to enable it for the SD card. I have only seen a few devices with this capability enabled for the SD card, though most seem to have it for the internal storage (/data). Typically if it's enabled, there will be a menu item in the settings referring to SD card encryption.

Here's the option for the Galaxy Tab 2 for example:


Virtual track pad to control mouse pointer in android

Instead of trying to move the cursor to areas where the touch is not working, temporarily moving the screen to the area where touch is working looks like better alternative to this problem.

Niwatori-one-hand-mode app in xposed framework, gives options like that. Using this app along with other Launcher apps like LMT (launch bar) app solves this problem for me.


Attempt to root AVD running Android 4.4/5.1 is failing

I have tested and found that irrespective of the version of Android, if the ABI is arm, armeabi or maybe even mips (not sure), the process of rooting is going to work. They didn't worked for me, as of now, if the ABI is x86 or x86_x64 for Android 4 and 4+.

Below, anything after "#" is supposed to be a helpful comment.

Testing working on - Android 1.x, 2.x, 3.x, 4.0, 4.1, 4.2 (add additional space in subsequent boot):

adb shell mount
# Preferred command: adb shell mount -o rw,remount -t yaffs2 /dev/block/mtdblock0 /system
adb shell mount -o rw,remount /system
adb push su /system/xbin/su
# Appropriate su binary from Chainfire's SuperSu.zip package.
adb shell chmod 06755 /system
adb shell chmod 06755 /system/xbin/su
adb install "Super user.apk"
# Update the su binary for sure.
#adb install "Rootchecker app OR Terminal Emulator app to test."

Testing working on - Android 4.3-4.4 (add additional space in subsequent boot), 5.1, 6.0:

adb shell df
# See the available space in /system
adb shell mount -o remount,rw /system
adb push su /system/bin/su
adb shell chmod 0755 /system/bin/su
adb push su /system/xbin/su
adb shell chmod 0755 /system/xbin/su
adb shell su --install
adb shell "su --daemon&"
adb shell setenforce 0
# optional and recommended; adb shell mount -o remount,ro /system
adb install "Super user app"
# Update the su binary.
#adb install "Rootchecker app OR Terminal Emulator app to test."


How to measure the charge left in a dying battery?

You would need to re-calibrate the battery.

I would suggest reading the answers on:

How frequently is it okay to let the battery discharge fully or as low as possible?
Looking for a consistent answer about battery calibration
Is there an efficient way to calibrate the battery than using some apps?


How do i change the way contacts display?

It isn't supported by default in the stock Contacts provider. However, you can use a third party contact management application that allows thumbnail view. One good option would be Contacts+.


How to watch Youtube with screen off on any Android without a Youtube Premium subscription

There is a solution,
if you want to listen YouTube song even when your android phone is locked. To do that you have to use chrome browser in android phone. Open YouTube in chrome browser and request as Desktop Site and search for the song which you want to listen then minimise it. The song will be paused then, from the notification you can tap on the play(▶). By doing this you will be able to listen YouTube videos in your phone even if it is locked.
I hope this will help you.


How to extract SMS/MMS from Android to readable format?

There is an app called “Export Messages” that looks like it would do exactly what you’re asking. You can check it out at this link: Export Messages

I stopped looking when I found this but I’m sure that there are many more like it.  Now that you know what you’re looking for, you may be able to find an app that suits your needs even better than this one.


How to synchronize gmail calendars in davdroid 1.10.1.-gplay using caldav in android 6.0.1?

The current Google API /  OAuth method is not supported by DAVdroid but it's still possible by using the deprecated format:

https://www.google.com/calendar/dav/[yourname]@gmail.com/events
username
password

Yet it requires the compromise Allow less secure apps: ON in the Google security settings.

However, delegates don't sync.

Tested on OnePlus 3t, Android 7.1.1, DAVdroid 1.10.1.1.


Long tap on the network you want to configure. Then select 'modify network'. Scroll down and check ' show advanced settings'


Hiding WhatsApp display picture of a certain user

You can't change someone else's profile picture on WhatsApp. You can only change your own. There was a bug in WhatsApp that used to show whatever photo you add to the contact in your phone's contacts app instead of their actual profile picture on WhatsApp but now it's fixed I guess.


The phone is stuck in download mode and gives error verifying vbmeta image. The device is a205f samsung

you should extract ap file and out recovery.img.lz4 and change it to recovery.img.tar,at first flash pit file then  flash recovery.img.tar (uncheck reboot) then go to recovery and reset factory your device. it works for me.


What volume setting do the Twitter and Facebook apps obey?

1) App notifications use the Ringer volume for how loud the notification is played.

2) You could use an application like Locale or Tasker to automatically silence your Ringer volume during the night.  Then you could create exceptions if you need for certain people to be able to call you during the night.


Install MapsOn by coderminus.

Go to Menu > More > Preferences > Configure Maps and set /sdcard/maverick/tiles/Google/ or /storage/sdcard0/maverick/tiles/Google/ as the path for the tiles of Google Maps. Now you can use the "Cache area" feature of MapsOn to download the tiles of selected areas.

Since they are stored in the Maverick folder, they are used by Maverick if you select "Google" as the map source. This also works for other map sources if you adapt the corresponding paths in MapsOn.


Can only access 2.2GB of internal storage from Windows

This is a known issue with various Galaxy S models after upgrading to 2.2.  I don't think anyone's found the cause, but this fix should work (did for me on my Vibrant) and is relatively simple.  Make sure to do a backup first if you want, preferably using ClockworkMOD / Nandroid, because this will wipe out everything except your external SD card.  And make sure you have good drivers installed.

Download stock 2.2 firmware, such as from this XDA post for AT&T (first link) or this XDA post for Rogers (first link, "Odin Flashable").  Do not unzip it.
Download Odin (for Windows.  If you have no access to Windows, use Heimdall and modify steps 4+ accordingly).
Download the 512 PIT file.
Put your phone into download mode:

Take out the battery.
Attach the phone to your computer via USB.
Press and hold both volume buttons.  While holding:

Insert the battery.
Click the power button.
Wait for download mode to show up (yellow triangle with an android in it).

Start Odin.
Load the firmware .zip file into the PDA field of Odin.
Load the 512 PIT file into the PIT field of Odin.
Ensure "Re-partition" is checked.
Make sure Odin shows your device connected (Yellow box with text something like "0:[COM1]").  If not, disconnect the phone from USB and immediately re-connect.
Click Start.
Wait till Odin says it's done, then disconnect your phone.  Or if Odin shows an error, reboot your phone and start from step 4 again.  (Sometimes this just happens).


I can't find certain files on my android that should be there

The file you are searching does not exist. The stock browser does not use a WebView. Also the databases ate stored inside the databases folder.
The only database that should be there (and should not contain any passwords) is the browser2.db.


How can I access bookmarked 'my places' maps from android phone?

Since the update to Google Maps last year you should now use Google Maps Engine to create custom maps and access these on Android via the corresponding Maps Engine app.

From Desktop Maps you can get to Maps Engine by clicking in the search box and then clicking 'My Custom Maps'.

To import existing maps saved to 'Classic' My Maps:

go to 'My Custom Maps'
then 'See all my custom maps'
in the 'Open a map' window, select 'Classic My Maps'
tick the maps you want to import and then 'Select'
followed by 'Import'

You should then be able to find these maps in the Android Maps Engine app under 'Open a map' > 'Classic maps'.

If your map wasn't created by you (will show as 'bookmarked' rather than 'created by you' in My Places) then you might need to re-import it into 'My Places' as KML to make it available to import into Maps Engine...

Click the name of the map in 'My Places' (found by clicking the little cog icon in the bottom right of 'new' Maps or at https://www.google.co.uk/maps/mm)
In the left hand panel copy the link to the KML file
Back at 'My Places', click 'Create with classic My Maps'
Give the map a title then 'Import'
Paste in the URL of the KML link and 'Upload from URL'

You should now be able to go back to Maps Engine and import the map as above.


Is it possible to estimate the ideal number of CPU cores for Android phones?

Even though you think you're only running a single app at a time, that doesn't mean only a single thread is running. Getting the UI from that app onto the screen is actually done by a second process, called Surface Flinger. Even within that one app you're using, there are probably multiple threads: one drawing the UI and responding to your input, another communicating with a server, and perhaps another doing whatever slow computation the app needs to do. Having multiple threads allows the UI to remain responsive while performing these slow tasks. On top of that, other apps run in the background sometimes: WhatsApp is listening for new messages, Gmail is checking for new mail, Google Now is checking updated stock prices, Google Play is downloading an app update, etc.

All in all, there's no single ideal number of CPU cores that suits every situation. A lot of the drive towards increasing number of cores on phones is marketing, just like the clock speed wars on PCs 10 years ago. But there's an extra factor that makes it worthwhile having these huge numbers of cores: dark silicon.

The silicon area on the phone's system-on-chip that's taken up by a single CPU core has got smaller and smaller over the years. Most of the space is taken up by RAM, and even the GPU is several times larger than the whole CPU. It doesn't cost much to just put more CPU cores in the silicon. Most of the time, if your phone isn't doing very much, those extra cores can be turned off to save power. But then when you want to play a mobile game, or run a Snapchat filter, or anything compute-intensive that wants to run several threads, those extra cores can be powered up for a burst of speed.

So really, the ideal number of cores is lots. Even if some people never run the kind of workload that benefits from lots of cores, there's almost zero cost to having unused cores, and there's a huge benefit for some workloads.


Is it possible to install Chromium on Android?

As mentioned on Eldarerathis' comment, no matter what, you are going to need a newer version of Android, which probably means (CyanogenMod will only get you to 2.3.7) that you'll need a newer phone.

The good news is that from 4.0+ it only gets easier to easily run Chromium safely on Android. For Android 4.4, there's a free and open-source app getChromium that installs/updates the Chromium browser on Android.

FULL DISCLOSURE: A lack of trust in http*://chromium.woolyss.com, and other, equally sketchy non-Google vendors giving away "Chromium APK", together with a passion for malware-free Chromium APK was actually what motivated me to put together getChromium as an open-source means of getting builds directly from Google's repository over here: https://commondatastorage.googleapis.com/chromium-browser-continuous/Android.


TWRP restored backup and now "google play services has stopped" pops up every second

I had a similar problem with my OnePlus.
This helped:

Go to “Settings”
Select “Apps”
Swipe left until you in the ‘All’ column
Click on the 3 dots in top right
Select “Reset app preferences”
Reboot phone
Reselect preferred launcher

via http://blog.forret.com/2015/06/getting-rid-of-google-play-services-has-stopped-on-oneplus/


How to resize partitions when /system isn't mounted in recovery

To use fdisk without recovery, i.e. while Android is running, you need to root your phone, install a terminal emulator, and install BusyBox (the fdisk command won't be available without BusyBox, which provides a bundle of common Linux tools that aren't included in Android). Note that to install BusyBox, it's not sufficient just to install the app. You need to launch the app and click the Install button in order to install the tools.

The process of rooting is device-dependent, and I don't know specifically how to do it on your device, but you could try Towelroot, which works on a wide variety of Android devices and is incredibly simple to use.


my samsung galaxy plus battery draining quickly some time it is showing 50% but immidiatly 0%

Not a lot of information but to venture a guess -how old is the battery? Batteries don't last forever.  What radios (GPS, Bluetooth and so on) are running?


How to remove a persistent malware that downloads unwanted apps?

The app - NoRoot Firewall can be very useful for preventing unwanted malware / adware related app downloads. Cheap phones, tablets (particularly phones off the grey market) typically experience this issue.


YouTube app bug "Connection to Server Lost"

Clear cache and data of YouTube and Google play services. It is recommended to do this provided you have a high speed WiFi/data access. These apps may download approximately 70-80 MB after clearing their data.

Steps:

Disconnect all data connectivity. i.e. WiFi & mobile data.
Go to your phone's 'Settings'.
Click on 'Apps'.
Scroll down to YouTube and click on it.
Click on following buttons in order: 'Force Stop' > 'Clear Cache' > 'Clear Data'.
Press 'back' button to come back to application list.
Scroll up for 'Google Play services'.
Do same again in order: 'Force Stop' > 'Clear Cache' > 'Clear Data'.
Restart your device.
Switch on your data connectivity. i.e. WiFi/Mobile data.
Open Play Store and wait until everything successfully loads up.
Now exit from Play Store and open up your YouTube app. It should probably work fine now.


lost apps after backup and restore on Samsung Kies

I say go to play store, when you will open my apps section the backed up apps will be downloaded automatically. Make sure that you are connected to WiFi or 3G .


How To Track My Stolen Phone Without Usin Wifi

There are a number of similar questions already:

Is there a way to block access to or wipe my Google data for a lost/stolen phone
My android phone was stolen. How worried should I be with all my google data inside the phone?
My phone was just stolen an hour or so ago. Are there any options for tracking?
Is there any way to erase personal information from my phone that has already been stolen?
Can I locate my android phone?


How can I (permanently) remove an sd card without harming apps on the device

As Izzy said in the comments really your best option is to just buy a new card. They are super cheap especially if you buy online. I just looked on Amazon and the cheapest 16 GB SD card I could fine was just over $12.00 US. I'm sure you can go to your local electronics store and pick one up for around $20.00 US if you don't want to deal with buying online and shipping and whatnot.

But, if you are stingy (most of us are, lets be honest!), make sure you have migrated all of your apps back to internal storage with AppMgr III. Once this is done you can shutdown the phone and remove the SD card.

If you want you can create a backup of your SD card just in case you need the data on it in the future. You can just copy and paste all of the files into a folder and then compress it, or you can create a disk image of the drive, whatever is more convenient to you.

Then turn on your old device with the card NOT inside of it. Go through all of your downloaded apps and see if any of them were relying on data on the card. Once you find the apps that need the SD card you can then choose to uninstall and reinstall them, or see if you can transfer the files off of the SD card and then back onto the device and then point the app to the folder. It might take a little bit of screwing around, but perhaps the feeling of having extra cash in your wallet will overcome the frustration of dealing with data migration. Good luck!


No you simply can't. The phone is released with Lollipop (5.0) as its initial version. And even if there was once KitKat available, chances are you can't downgrade to it due to bootloader restrictions.


Chromecast needs some sort of connection in order to receive the media to display.  Wi-Fi is the main option via a wireless router or a personal hot-spot.  Google also sells an Ethernet adapter that you can plug into your wired network.

Usually Chromecast requires Internet connectivity to function, but it is possible to trick it into working on a hot-spot that lacks Internet connectivity.  This work-around requires 2 Android devices for initial set-up, and the LocalCast app. The steps are described here and here.

Quote:

  Gather two devices
  One must be an Android cell phone with mobile capability. The second can be any device that is capable of local media
  open "settings" on cell phone
  open "more networks"
  select "mobile hotspot"
  turn on "mobile hotspot"
  go into "mobile hotspot" settings by selecting the 3 vertical dots in the upper-right corner
  select configure hotspot
  type in a name you would like to call your mobile hotspot network or leave the default name
  scroll down to choose a password for this network

  Now we must switch the Wi-Fi network that the Chromecast is paired to.

  ensure that the second device (the one you wish to cast from) is connected to the same network that the Chromecast is paired to (the
  pairing was done when you first setup your Chromecast)
  open the Chromecast app (if using iOS or Android) or open Chrome if using Linux, Windows, or MacOS
  From the app choose the name of the Chromecast or from Chrome select the Chromecast icon in the upper-right of the screen, and then
  choose the name of the Chromecast
  Select "Wi-Fi"
  Select the name of the network you are on (this will drop-down a menu with other networks)
  Select the name of the mobile hotspot network you created and enter password
  This will successfully switch the network that the Chromecast looks to connect to

  Now we will open LocalCast app and cast the video we desire. And
  lastly we will go back to the cell phone and turn off "mobile data"
  and leave on "mobile hotspot"


How to connect more than 1 device using tcp connection with ADB over wifi

You can connect multiple devices via USB. You just need to specify that device when you connect with adb by calling commands like this

> adb -s _device_serial_number_ [adb-command]

you can also connect multiple devices over wifi by using the following command

> adb connect xxx.xxx.xxx.xxx:5555

this is the IP address and Port of the device that ADB is listening on. Now you setup your connections on your PC.

> adb connect 192.168.1.51:5555
> adb connect 192.168.1.52:5555
> adb connect 192.168.1.53:5555

check if they are all connected.

> adb devices
> 192.168.1.51:5555 device
> 192.168.1.52:5555 device
> 192.168.1.53:5555 device
> _device1_serial device
> _device2_serial device


How to clear erroneous unread sms indicator

Go to Settings -> Application manager.  Find an application called "Badge Provider" and clear it's data.  Then restart the phone.  The (1) goes away.


This could just be that you are running out of RAM. There is more information on this here, if you need it.


Getting Virtualbox Ready with Android X86 and ARM without Emulator

The Acorn RISC PC ran ARM and x86 processors natively. That may be what Izzy was referring to; anyway you do need an ARM emulator or translator if running Android x86 and wanting to run ARM-only software. ARM and x86 are totally different processors!


There are different WCDMA(UMTS) frequency bands. I believe that they use Band-I (2100MHz) in IRAQ. You did not mention which country you bought your phone in. But if it was anywhere in North America - I have bad news for you: none of american carriers use this band so very few phones sold here support it.


Sending email from an alias using Gmail app

It's still not possible if you use Gmail app.

Alternatively, you can use FairEmail ( link to the community ads promotion), which let's you do this and has many more features available.

I use  Gmail aliases with this app (not affiliated to it) . You can refer to the extensive app FAQ
in case of issues or join the active app forum on XDA


Remove bloatware on Galaxy S2 - what are my options?

A backup never is a bad idea, so right after you get root access, you should:

Do a full NANDroid backup (which creates images of your partitions, so you always can revert to this state by simply restoring them)
Use Titanium Backup to make a full backup of all your apps and their settings (so you can re-install a selection when needed)

Freezing does not remove anything, and it is fully revertible. I always recommend to first freeze a single app, then check for potential side-effects, and only remove it if there were none. Titanium Backup even offers to create a homescreen shortcut to freeze/unfreeze an app (like a toggle: If frozen, the app gets unfrozen and vice-versa), which is nice for apps you rarely use but which always annoy you (for me, this is Google Maps, which I need maybe 2-3 times a year but is running permanently in background -- so I freeze it when not needed, and simply unfreeze it when I need it).
Basically, freezing an app simply hides it away from all activities. I'm not sure how that works technically, but I compare it with the "execution flag" of a Unix/Linux binary: If not set, the binary does not get executed. So no background services or any other activities from this app, though it is still installed.
In short: Freezing is the safe variant, as it easily can be undone. It also doesn't touch the apps data. Removing an app is final: without a backup available, it's simply gone, including its data.

Additional ressources you might want to look up for this topic:

Unistall a system app without root?
How can I uninstall applications that are locked by phone vendor?
How to Remove / Disable the Bloatware Apps in the HTC One X
Bye-bye, bloatware: Disable system apps in Android Ice Cream Sandwich


How to transfer iPhone contacts to Android Samsung without using iTunes?

You can sync your contacts with gmail in iPhone, then use same email ID in android device and it will automatically sync contacts.


Uhhh, you're going about this the wrong way.

You do not adb push the flash image onto the handset itself then adb shell into it and flash from there.

The two reasons being is that

From the adb shell it cannot "see" the recovery partition and does not know anything about it!
There is limited space within the /data mount point which could have contributed to the endless stalling...

The correct way to do this is from the PC side, put the handset into fast-boot mode or boot-loader mode, plug in the cable into handset and use the fastboot flash recovery recovery.img then reboot the handset via fastboot reboot, holding down the volume down key to get into recovery mode.

The windows equivalent of the fastboot command would be fastboot-windows IIRC.


What could I do to rescue some files from my sm-t320?

If the version of TWRP on your device allows in the Mount section to Enable/Disable MTP, you can use it to connect to your PC and copy files from the internal storage to the PC.

Or you can insert an SD card, and copy files from the internal storage to the SD card using TWRP's terminal with the following command

cp -R /path/to/internal_storage /path/to/sdcard/folder

Then insert the SD card to PC and copy the files.


I can fix it now . This happen when i install gltool.
I just  uninstall  it and apps fullscreen now.


Does the operating system matter when syncing?

Android doesn't natively use any software to sync or perform syncs with your computer.  It syncs with your Google Account services in the cloud.  You can sync certain things with your computer in different ways and it all depends on what and how you are trying to sync, but generally, Linux machines work just fine with Android.

If you want more detailed answers try being more specific about what you want to do (sync your contacts with Thunderbird, or sync you music...).


Clone android phone storage without root

Do you mean you don't know the PIN (or pattern or so), but you might remember it later? I am sorry, Android is designed to prevent it. And if you somehow manage to do it, it is likely to be far more expensive than buying a temporary phone until you remember the PIN.

Imagine what would happen when you were allowed to do that. You would be able to bypass any PIN protection. You would be able to do so even if the data were encrypted by the PIN, as this would allow you to brute-force the PIN.

As far as I know, the data are not encrypted by the PIN (or any key derived from the PIN by PBKFD or so). Instead, they should be encrypted by a key that is released from a hardware-based key storage after the correct PIN is provided. The hardware-backed storage should handle remaining PIN attempts and clear itself after the PIN attempts are exceeded.


Try deleting Google+ data/cache, then start Google+ app. It will log you in and then you can choose Auto Backup setting. You can then go to Sync settings, untick "Sync Google+ Auto Backup" and then tick it again. Seems to work for me. You can also go to the Google+ app settings and get it to upload all your photos/videos to start the sync.


Sharing decryption keys from OpenKeychain

With OpenKeyChain as with any PGP app, you always generate key pairs: one private and one public key. The private key can be used to decrypt data which was encrypted with its public counter-part.

Now, when you share a key, you always share the public part – which can be used for encryption, but not for decryption. Hence, the message encrypted using Bob's key cannot be decrypted with Alice's key: on that device, only Alice's key pair and Bob's public key are present, so only Alice's private key is tried for decryption. Hence you get that error message.