Do not Disturb Mode with some special conditions

It sounds like Agent fits the bill for you. Specifically, the Sleep Agent.

I do use the Agent app, though I don't use the Sleep Agent itself, so this list of features is just me going through the setup options in the app.

Set Days & Times for it to activate. (defaults to 11:00 PM through 7:00 the next morning, Sunday through Thursday nights.)
Selectable whether it does 'Silence' or 'Vibrate'.
Has a whitelist of callers that are allowed to get through. (And selectable whether unknown callers get through or not.)
Can wait until plugged in before starting.
Can auto-respond with a text saying "I'm sleeping, text 'urgent' to wake me up."
Right off your request list, it can allow repeated calls to get through.

(I use Agent mostly for the Meeting Agent: It links to the Google Calendar on my work account, and auto-silences the phone for the duration of the meeting.)


my android phone keeps asking “Sign-in to WiFi network” even if WPA/WPA2 is already authenticated

I fixed mine by putting a static IP. I chose a IP in my network range and it work


If you have Froyo or newer (2.2+) you can use SeekDroid (Market link) or for lower versions the same company did Find My Phone (Market link). I've tested only SeekDroid, works great with the web interface, with Find My Phone you only get the GPS coordinates via text message, but you can input the coordinates to Google Maps for example.


Cerberus is an anti theft app. It can be used to maliciously spy on you making it spyware. I don't know who has used this phone or where it has been anything could be on it.


Can i save my data from sd card formatted as internal memory but now pc says format memory card

No... You have factory reset the device which deleted the unlock key that would have given you any hope of recovering this data. The data was encrypted and unlock code was stored on the device, which you factory reset and erased everything. Your SD card was "internal storage" which was erased, the fact it was removed from the device isn't relevant because even technically the data is there it isn't recoverable by any means.


adb: Restoration of a backup on Acer Icionia 7 fails by error "archive is encrypted but no password given"

Thanks to alexcs I was able to get it working, so here are the steps to solve the issue:

You need to convert the .ab file to unencrypted .tar archive, first. To do that, follow next steps.
If you have not installed Java SE on your computer yet, download it and install.
Download android-backup-extractor from SourceForge and extract it.
Now open Windows Explorer and locate the folder, to which you unpacked that archive.
Navigate to ...\android-backup-tookit\android-backup-extractor\android-backup-extractor-20180521-bin
Open the folder, where is located your .ab backup, in a new window and copy the abe.jar executable from android-backup-extractor-20180521-bin folder and paste it here.
Now open command-line or Windows PowerShell and use the cd "path" command (for example cd "C:\omegavesko-HoloBackup-179d978\Backups" to change your parent directory to the folder, in which is stored your .ab file
Now convert the .ab file to unencrypted .tar archive by entering this command: java -jar abe.jar unpack [file name of the original .ab file] [file name of the output file],(for example java -jar abe.jar unpack backup_june_2020.ab output.tar).
Now unlock the .ab file by entering password, which should be the same as the password you are using to unlock the backup function of your device.
Wait, until the process is not finished (the size of the .tar file will stop grow) .
Now convert the .tar file to unencrypted .ab file, using command: java -jar abe.jar pack [file name of the converted backup file] [file name of the new .ab backup](for example: java -jar abe.jar pack output.tar backup_june_2020_fixed.ab)
Wait, until the process is not finished.
Now navigate to the directory, where is executable HoloBackup.exe (for example cd "C:\omegavesko-HoloBackup-179d978")
Now power on your android device, connect it via USB and eventually make other neccesary settings.
Restore the backup by using command .\adb restore "file path" (for example adb restore "C:\omegavesko-HoloBackup-179d978\backups\backup_june_2020_fixed.ab")
Enter the password on your device to unlock the backup function.
Wait until the process finishes.


Chrome which you are using is targeting minsdk 24 which corresponds to Nougat and you are on KitKat so you shouldn't be surprised if it doesn't work properly (you can check the manifest using many apps available to determine sdk level- just search for manifest on Play Store )

You can search Chrome version that is compatible and download from third party sources of your choice. Related Install Google Chrome for old tablet / phone


Change the date format of the default Phone app in Micromax canvas 4

Actually mm-dd-yyyy date format is used in American English(USA-style) and dd-mm-yyyy is used in British English(UK-Style) So to change date format in your device simply change language option in your device from US-English to UK-English.

Settings->Language & Input -> Language -> English(UK).

I hope it would help.


Samsung says

  ....You can charge your phone using any Samsung-approved wall charger, but charging speeds may vary depending on the charger....

Further this reddit claims that S7 and S8 use the same charger

I am not sure what is the difference in charging speeds

In the absence of specs , it is not possible to say for sure, but I wouldn't hesitate since both chargers are Samsung and apparently similar as pointed in the reddit.


Sorry, [almost everything] has stopped unexpectedly

You can try sending an Intent with the adb shell. Connect the device, open a terminal and type the following :

adb shell am broadcast -a android.intent.action.MASTER_CLEAR

You need adb installed.


Avoiding Cross-Contamination of Auto Suggest Dictionaries

While not as complete of an answer as I'd like, I was able to improve my typing experience vastly by doing the following:

First, it is important to understand the difference between auto-correct (or auto-replace, as it is known in the settings) and predictive text. Predictive text, when enabled,  is what is shown in the black bar above the keyboard. Auto-replace automatically replaces whatever string you've typed with the most probable string pulled from a dictionary file.

Instructions:
By going into my keyboard settings and enabling predictive text AND auto-replace for ALL installed input languages I was able to greatly improve the function of the keyboard. For whatever reason, it would seem that unless auto-replace is enabled for all languages, the probability algorithm doesn't effectively limit it's results to the current input language.

I tested English, German, Turkish and Spanish and was able to receive useful predictions and auto-replacements for each language.

That said, it isn't a perfect solution. Text predictions at the beginning of a sentence are more likely to contain unhelpful suggestions (probably due to limited data fed into the prediction algorithm), and intruders do still occasionally make their way to the front of the auto-correct list.

For this reason, it's probably important to absolutely avoid lazily entering text in a language other than the currently selected keyboard in order not to muddle up the predictions.

Notes:
It is still unclear to me how the dictionaries are actually stored on the device, so hopefully a more in-the-know user can provide a more satisfactory answer in the future. From the observations I've made, it would seem that a single, combined - language dictionary file is being used.


Will any new apps or data installed or added to android phone after encryption also be encrypted?

Android 6 used Android Open Source Project: Full Disk Encryption

Full-disk encryption uses a single key—protected with the user’s device password—to protect the whole of a device’s userdata partition. Upon boot, the user must provide their credentials before any part of the disk is accessible.

So all apps & data installed on the userdata disk partition would be secured by that key. One way to think of Full Disk Encryption is like a exterior door house key, once you can get into the house, the contents are accessible.


Get the size of the navigation bar using ADB

Enter this one-liner:
adb shell dumpsys window windows| sed -n '/Window .*NavigationBar.*:/,/Window .*:/p'| grep 'Requested'

Alternatively, if you don't have Linux/Mac, try this:

adb shell
dumpsys window windows | toybox sed -n '/Window .*NavigationBar.*:/,/Window .*:/p'| grep 'Requested'

What's happening in that one liner is this:

we use dumpsys to output all the details of all the windows displayed on the screen (irrespective of the screen on or off)

we filter the content using sed to show only those lines which have information about Navigation Bar

we grep the information we need.
You can alternatively try grepping for grep mSystemDecorRect. I don't know which one is more reliable in all circumstances.

Expected output example:

Requested w=1080 h=126 mLayoutSeq=10835

# if 'mSystemDecorRect' was grepped, then:

mSystemDecorRect=[0,0][1080,126] mLastClipRect=[0,0][1080,126]

w: width, h: height, of your navigation bar respectively.
Note: for some reason if the one-liner fails to work or gives unexpected output, filter it like this. Get the dump using that first dumpsys command, then find the entry for your NavigationBar, and within that, look for the size.
Tested on OnePlus 6 running Android 10.
Credits: Fiximan of Unix & Linux for sed command.


Updating from version 4.4 to version 5 let me to a dead phone

**

  Note: Please backup your data before following this.

**

This situation is pretty easy to overcome.

Download the nexus 5 image from the google developer forum.
Unlock you bootloader to do this. Note: Results in factory reset
fastboot oem unlock
Extract the downloaded file

Use the flash-all.bat file to flash the new image
If the flash-all.bat failed to execute, extract the contents of image-hammerhead-lrx21o.zip
Flash all the files one by one by using the appropriate command.

E.x: To flash cache.img use fastboot flash cache cache.img

Follow the xda post here for more details and troubleshooting.


Where are the downloads from the Browser stored and how to I get to downloads from the browser?

There should be a "Downloads" app in your app drawer. Open it to view your downloads. Previous versions of Android (up to Gingerbread, AFAIK, possibly Honeycomb) had a "Downloads" option in the Browser itself under Menu->More->Downloads, but it's possible this no longer exists on ICS.

Alternatively, if you have a file manager they should be in /sdcard/download, I believe (on ICS this actually appears to have changed to /sdcard/Download with a capital 'D'). It can vary by device a bit, but generally it should be /<whatever_your_"sdcard"_path_is>/download.


How to get acces to offline YouTube videos downloaded to my Android 9 Cellphone?

The offline videos in YouTube app can only be played within YouTube. You cannot play them in an external player.

Your alternate option is to download those videos as MP4 files and then playing them in your favorite player. But do remember that downloading videos are against YouTube's terms and you won't find more help on that topic over here.


Is it possible to create a RAMDisk / Ramdrive for Android 4.x?

If you do a cat /proc/filesystems you should notice tmpfs. So if you have access to the mount command, you shoud be able to

create a directory (mkdir MYDIRECTORY)
mount a tmpfs-filesystem there (mount -t tmpfs tmpfs MYDIRECTROY)

Per default a tmpfs-mount will use halv of the available RAM on your system. So rather than "auto-growing" you can think of it as "auto-shrinking" - i.e. the more you use it, the less RAM will be available. In the worst case your system might start swapping (which you do not want). You can use options to use a different RAM-size for that mount.

2017-02-28 Update: Due to the restrictions imposed by Android you should choose a mount point below an writeable to all Apps. Like an SD Card.


Firstly . It is possible to make a custom ROM to upgrade the current version of android that is installed on your phone

Secondly you can't port roms of other devices to your phone . But  you can take the stock rom of your device and make some modifications to upgrade the version of android.

For custom rom development refer here.

http://forum.xda-developers.com/showthread.php?t=2069130


Press volume up/down button and then expand volume bar and lower the notifocation sound.


Same app paid for twice due to some error on Google Play Store, no receipt of failed transaction, but money deducted

As updated by OP the first payment has been cancelled after verifying in the payments Center
Since the payment had been honoured by the bank prior to the cancellation (likely), you can contact Google and talk to them and request for a refund (or from the Google Play Settings → Help and feedback)
Typical refund requests time line here


Google Play Store: Package file was not signed correctly

I am pretty sure this is an issue with the Play Store, and not your specific device.  Probably the best bet is to just wait, and try again later.  You could also use the Play Store customer support to complain (which might get the issue elevated in their internal bug queue).

Bottom line, it's not you, it's them.


When will my device get the Android 8.0 update (Oreo)?

This community wiki will list all of the known and rumored dates for devices.

If you have an update please edit this wiki here, but make sure to follow the format that's been established, and the following guidelines:

Keep devices in alphabetical order listing the manufacturer and model
Specify if the date is confirmed or rumored and link to the source
If there is an unofficial release, link to the site where it can be downloaded

Phones

Asus

ZenPhone 3: TBD confirmed
ZenPhone AR: TBD rumor

Blackberry

KEYone: TBD confirmed

Google

Pixel: 2017-08-21 confirmed
Pixel XL: 2017-08-21 confirmed

HTC

U Play: TBD rumor
U Ultra: TBD rumor
U11: TBD confirmed

Huawei

Honor 9: 2017-10-30 confirmed
Nexus 6P: 2017-08-21 confirmed

LG

G6: TBD rumor
Nexus 5X: 2017-08-21 confirmed
Q6: TBD rumor

Motorola

Moto G5: TBD confirmed
Moto G5 Plus: TBD confirmed
Moto G5S: TBD confirmed
Moto G5S Plus: TBD confirmed
Moto Z: TBD confirmed
Moto Z Droid: TBD confirmed
Moto Z Force Droid: TBD confirmed
Moto Z2 Force: TBD confirmed
Moto Z Play: TBD confirmed
Moto Z2 Play: TBD confirmed

Nokia

Nokia 3: TBD confirmed
Nokia 5: TBD confirmed
Nokia 6: TBD confirmed
Nokia 8: TBD confirmed pushed

OnePlus

OnePlus 3: confirmed pushed
OnePlus 3T: confirmed pushed
OnePlus 5: confirmed, unofficial on XDA

Samsung

Galaxy A3 (2016): never rumor
Galaxy A3 (2017): TBD rumor
Galaxy A5 (2016): never rumor
Galaxy A5 (2017): TBD rumor
Galaxy A7 (2016): never rumor
Galaxy A7 (2017): TBD rumor
Galaxy C7 Pro: TBD rumor
Galaxy C9 Pro: TBD rumor
Galaxy J1 variants: never rumor
Galaxy J2 (2016): never rumor
Galaxy J3 (2016): never rumor
Galaxy J5 (2017): TBD rumor
Galaxy J7 (2017): TBD rumor
Galaxy J7 Prime (OnNxt): TBD rumor
Galaxy Note 5: never rumor
Galaxy Note 8: TBD rumor
Galaxy Note FE: TBD rumor
Galaxy S6 series: never rumor
Galaxy S7: TBD rumor
Galaxy S7 Active: TBD rumor
Galaxy S7 edge: TBD rumor
Galaxy S8: TBD rumor
Galaxy S8+: TBD rumor
Galaxy Tab S3: TBD rumor

Sony

Sony Xperia XZ Premium (G 8141, G 8142): TBD rumor
Sony Xperia XZS (G 8231, G 8232): TBD rumor
Sony Xperia XA 1 (G 3121, G 3123, G 3125, G 3116, G 3123): TBD rumor
Sony Xperia L1 (G3311, G3312, G3313): TBD rumor
Sony Xperia X Compact: TBD rumor
Sony Xperia XZ (F 8331, F 8332): TBD rumor
Sony Xperia X Performance: TBD rumor
Sony Xperia X (F 5121, F 5122): TBD rumor
Sony Xperia XA 1 Ultra (G 3221, G 3212, G 3223, G 3226): TBD rumor

Tablets

Asus

HTC

Samsung

Other

Nexus Player: 2017-08-21 confirmed
Pixel C:  2017-08-21 confirmed
Smartron SRT Phone: 2017-07-10 confirmed


"Unfortunately, Google App has stopped". Locked out of my phone! Please help!

I have a possible solution. But I don't think it works most of the time.

When you are at the lock screen and your keyboard doesn't pop-up, connect the phone to the charger or your laptop/desktop. It resets the processes and your phone will come back to normal. Disconnect the cable if connected previously. After the lock-screen is opened, take a gap of 20 - 30 seconds and connect it and try opening it.

This is an old regulation for many android phones and worked a lot of times in my case with Sony Xperia SP C5302. Hope it works in your case also.


How can I get all my files off my phone without USB

So I did manage to get it working with SSHDroid. The real problem was not what I thought it was at all.
I unplugged my wireless booster (Buffalo) and it started working. For some reason the booster blocks IP between the machines on the WiFi and the machines on the wired LAN even though they can find each other with ARP. I'm really glad I didn't start leaving a bunch of "does not work" product reviews.
(In case anybody's wondering why USB Debugging was getting nowhere, the data pins had come unsoldered; when the power pins finally started to go I knew what that problem was and took it into the shop to be repaired.)


Add to contacts from recent numbers in Galaxy S9

I am using the latest Samsung S8, so I will assume yours is most likely exactly the same procedure.

From the Recents list, tap the number you wish to create as a contact.
Mine opens a bar just below, 'Call' with a green phone icon, 'Message' with a bubble for messaging, and 'Details' with an info icon.

Tap 'Details' for an action bar to appear at the bottom of the screen with a '+ Create Contact' label. Tap, supply data to the page presented including any Name and Location and Detail information, then tap Save which appears in the header below the notifications area of the screen.


How do I get a full screen caller photo id?

Maybe you need something like that:

BIG! caller ID,
Full Screen Caller ID.

Notice: Both are free just for first five contacts. For more, you must purchase full version. Both require to assign HD photos manually (from SD Card, Camera or Facebook). None of them support images stored with your contacts on your Google account.


How to search contacts with T9 dialer on Nexus 4

This is now a standard feature of Android 4.3, although you do need to enable it.

From http://www.android.com/about/jelly-bean/

  Autocomplete - just start touching numbers or letters and the dial pad will suggest phone numbers or names. To turn on this feature, open your phone app settings and enable “Dial pad autocomplete.”


Phone extremely slow, even after factory reset

The most common culprits for slowing down your phone is accumulating background apps and hardware degradation. Since you've factory reset your phone, that rules out the first.
Flash memory in your phone degrades as you repeatedly write data, but this is a slow process. Eventually you will have sectors of memory fail from physical wear or accumulation of electrons which makes them unreadable.
Same thing happened to my Samsung Note 4. Was blazing quick when I first got it, now its sluggish, even after a reset.
Btw, check out Cycle (https://cyclephones.com)
It lets you stream an android emulator from a server to your phone so that you can run any app smoothly.
Full disclosure: I run Cycle, but I'd use it even if I didn't. There isn't a good solution to a slow phone other than buying a new one.


Customize notification led color without app

There is no Android built in feature or setting to do this. There are public APIs for it. There are many apps for this.

Certain OEMs such as OnePlus (and Moto ?) allow customizing the LED color per app.

There may be diagnostics pages on certain devices (I remember the old Nexus S had something like that) where you can type in some code on the dialer to run them, then do some diagnostic related things. I don't know if such things are still being shipped. Either way it is for diagnostics purposes only and are quite well hidden.


Phone number shown as unknown in galaxy tab

Well @RyanConrad yes this device supports voice and video calling I have been using tab2 from a while but like OP said the number doesn't appear over my device too. So, I would say this might be happening because our service provider doesn't supports this service and you can't manually set the phone number over their !


VW car bluetooth - Android 2.3.6 (Nexus S) phonebook display

For some reason this just worked itself out.  One day I did "update phonebook" in the bluetooth menu, and then everyone showed up.  Before that, I thought I was going to have to remove my wife, brother, mom, etc, from favorites to get them to show up in the car's bluetooth menu.

So, if this happens to you, try "update phonebook" in your VW/Audi bluetooth menu.


Details on Android OS massive data usage

Yes, you can - details here: http://www.makeuseof.com/tag/why-you-dont-need-third-party-apps-to-manage-background-data-use-in-android-jelly-bean/

From the article:

  "To access the Data Usage screen, open your Android phone’s Settings
  screen, and tap Data usage under Wireless & Networks. You’ll see a
  graph displaying how much mobile data all apps on your phone used over
  a period of time. Specify the “Data usage cycle”  time period that
  your carrier uses to determine your monthly data usage and you should
  see the amount of data you’ve used in the past billing cycle."

Hope it helps!


Yes, downloading and installing the APK should work as long as you have the Google Framework Services -- basically if the Market worked before, then it will again unless you removed system services.  (Those can be replaced as well but it's more hassle).


Download mode is for flashing radio firmware/ROM upgrade through official means.

Some devices uses U-Boot over the generic boot, it is a boot-loader code found in read-only ROM chip on the board, which uses a certain memory address offset, in which the kernel from the /boot partition gets loaded into that specific certain memory address offset and jumps into that address and the kernel starts running.

For details of the generic LK boot which is employed by most, if not all, Qualcomm based devices, see this

As for Download mode, for example ODIN is commonly used on Samsung devices to flash ROMs, those devices needs to be in download mode prior to flashing. However, ODIN is not the official way to do it, rather Kies, is the official route in upgrading the firmware, this is for Samsung devices for example.


I don't have a working ROM on my Sprint HTC One. I made an error when flashing; I'm on hboot 1.55 and Android v4.3, S-On

You need to do a factory reset and wipe the Dalvik Cache. What bootloader are you using? TWRP or Clockwork would be examples. I would enter this as a comment but lack the necessary reputation.
This tread on XDA may be of use. Soft Bricked - XDA


What's the Android Devices section of Google Dashboard for?

On my dashboard it shows my devices and a list of application data that is stored on the server.
Do you have backup enabled to Google servers? It is usually a setting in the Privacy menu.


i haven't been able to change contact colours, but you can change the text message conversation colours. go into the conversation of the person you want to change the colour of, tap the more button and go to people & options, there should be a little palette next to the name of the person you want to change


Transfer a file from Android to a PC (not in the same network)

I think you should try dropbox / google drive.
It will be more flexible than running a separate server on your phone. You will be able to access you file from the cloud at any moment even if you don't have access to your cell or the battery is dead.


Why does my phone slow down after using internet and installing apps?

"Getting slow" can be caused by a couple of different things -- separately or combined. It could be an app hogging your CPU, or the system running low on free RAM. It's even possible that some service runs havoc, blocking resources (though this one would be a bit harder to track).
Easy tracking for beginners (and for free)
There are several possibilities to find out what's going on. The easiest is to install e.g. OS Monitor and, when the device gets slow, starting this app and taking a look at the running processes. First order them by CPU usage: Is there any app constantly using 50% or more CPU? If so, you probably found the evil-doer. Next order them by RAM usage: Any app "eating" extra-ordinarily much?
Don't worry to much about how much RAM is free. There's no such thing as "unused RAM being a good thing" -- neither on Android nor on Linux. Free RAM will be used to speed things up, e.g. by caching files. Of course, if more RAM is used, those caches get freed.
Monitoring the system
If the easy approach does not help, you need heavier armament -- and a little background knowledge to use such. There's e.g. SystemPanel which can monitor your system. More useful is the paid version, which can do so in the background, and also saves its monitored data -- so you could even check after a reboot. An alternative helper-app is System Tuner (here again the paid app is more useful). Also, Tracing Memory might be worth a look (can't hurt, it's free).
Found it?
When you found out the bad app, actions depend on what it is. Is it an app that came pre-installed, or even belongs to the Android system, you e.g. could not simply remove it. Check the app's configuration, contact the developer, or search the web for known trouble with the evil-doer are always good steps to take. Of course, once you found the culprit, you can always come back here and ask a more specific question -- and with the background information you collected, we probably can give you better hints to solve the issue.


What's the difference between "Zombie, Run! Zombie Finder" and "Zombies, Run!"?

"Zombie, Run! Zombie Finder"

The first of the two games is called the "Zombie, Run! Zombie Finder".  It is free and open-source software.  The project founder is Peter Dolan.

According to an old comment by Reddit user "participating", it is:

  [A] fun way to get some running/jogging/terrifying brisk walks done ... It also has a multiplayer mode, which I have yet to try out.

Several people have had commit rights over the years, including Peter Dolan (project founder), Gabriel Francis (Spanish co-translator), as well as "empeamtk" and "agent.craig".

Development started in April '09.  Version 1.3 was released to the Google Play store in April '13.  At last count, the game had been downloaded more than one million times.  If you look at the most recent code commits, you'll see that revision r207 mentions a "Version 1.3.1".  But I'm not sure whether or not such a version was ever released.  The game is currently unmaintained.  But, because the game is open-source software, a new maintainer could step up at anytime.

Mr. Dolan has moved onto other things.  The game is gone from the Google Play store now.  I have no idea why; if you do know, please enlighten me.

You can download the game from Aptoide.  You can find basic usage instructions here.

"Zombies, Run!"

"Zombies, Run!" is the second of the two games.  It is completely separate from the first game, and comes from a different development team.  It's a closed-source "freemium" game.  It's maintained by Six to Start Ltd., a British game-development company.

It seems to me that this game was conceived independently, though I am surprised that the development team didn't choose a different name.  It was released in Feb. '12, and is available for iOS, Android, and Windows Phone.

The Google Play store app description writes:

  Zombies, Run! is a ... running game and audio adventure ... .  Every run becomes a mission ... with our ... audio drama putting you at the centre of your very own zombie adventure story.  While you run to [a] mix of ... audio drama and ... songs from your own playlist, you’ll collect supplies to grow your base back home.  ...  Zombies, Run! works anywhere and at any speed. You can jog in a park, run along a beach, or walk along a trail.  It even works on treadmills.

You can download the free version of the game here.

If you post questions about this second game over on our sister site Arqade, please use the tag [ zombies-run ].

Dear readers:  This post is marked as "community wiki".  Please edit and improve it.


Presenting screen in Teams for Android: Screen goes blank when I move hand near camera

You're triggering the proximity sensor. Those are located somewhere above the screen or in the notch, depending on the design of your device.
The purpose of proximity sensor is to disable screen and touchscreen inputs when you're talking with your phone next to your head. It prevents accidentally interacting with the touchscreen with your ear.
It's mostly useful for regular phone calls, but internet calling software can also make use of it.
Your screen sharing is probably still in progress while you do that, it only blanks your display.


You can force your cpu to work at full speed by changing the governor to Performance. If you are not sure what a governor is, you need to have ROOT ACCESS then you can use an app named Kernel Adiutor(https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor&hl=en) to change the cpu governor.

Also, overclocking would require a custom kernel which you can find at XDA Forums.

Found these relevant guides:
Tomsguide:https://www.tomsguide.com/us/overclock-android-device,review-1762.html

Androidpit: https://www.androidpit.com/how-to-overclock-android


Support for Multiple Users on same device

This is available for phones starting in Android 5.0 (Lollipop):
http://www.android.com/versions/lollipop-5-0/

And for tablets starting in Android 4.2 (Jelly Bean):
http://developer.android.com/about/versions/jelly-bean.html#42-multiuser

As Tatjana Heuser mentioned, it's also available as hidden functionality in Android 4.1, but not accessible through the regular user interface.


Show WhatsApp popup when clicking the message in notification panel

WhatsApp has implemented this feature on Mar 29, 2016 (v2.12.560). As a fallback for quick reply feature on Android N, WhatsApp added a (kind of) quick reply from notification for all Android version.

When a notification comes, you can expand it (i.e. by sliding down) to show the Reply button. Tapping the Reply button will bring the message as a popup, which you can also reply directly from there.

Image courtesy of AndroidPolice


What acts as the internal storage of an android device?

It's a flash memory chip on the mainboard of the phone. Usually it has the same electronic interface as an MMC, just soldered onto the board instead of in a socket.


The Mystery Of The Disappearing App Icons

are you using the stock launcher?
Clearing all data from your launcher app should sort of reset your app.
You can try that from Settings -> Applications -> (Launcher App) and then hit the "Clear Data" button. You will lose your homescreen settings preferences.

Also, you can try using a different launcher like Nova Launcher or GO Launcher. This should solve your issue.


Android didn't indicate which applications where toggling the wifi status accurately, and the logs were unhelpful.

I later noticed that "MyCricket", an application that helps pay for my Phone Service, had a setting titled: Turning on Cricket Wi-Fi Manager

Turning off this setting fixed it. I wish the Android controls had been more helpful.


How to sync deleted photos with google photos/drive?

Do not use Gallery to manage your photos. Use the Google Photos app to manage your photos on your device, when you delete a photo in the Photo app it is deleted from all attached devices as well, including locally and the Google Photo storage.


What are some general tips on improving overall performance of an Android phone?

Leave some empty space in the internal memory. When there is less than 10 MB left in the internal memory, Android can become very sluggish. Leave at least 20 MB. In my experience, low internal memory is often the root cause of sluggishness (and random errors).

Use app2sd as much as possible, especially if you have small internal memory
Uninstall big applications that you do not use much.
(!) In rooted ROM, you can use pm setInstallLocation 2 trick to force installing applications on SD card (note that not all applications can be safely installed on SD card).
(!) When system applications are updated, the original version of the applications are not deleted so you can uninstall the update. This takes up valuable space; if you're rooted, you can remove the stock application entirely and reclaim this space. I do not recommended this unless you are already using a Modded ROM since you can no longer use "Factory Reset" to return your system applications to the factory version (at least not without reflashing a fresh stock ROM).

Choose fast applications.

Use Opera Mobile or Mini. The stock browser is a great browser, however it's also quite sluggish (even Google's mobile home page it is sluggish as hell). Opera's touch interface is a bit annoying to use, but it is much snappier than the stock browser.
Choose a fast Home Screen. Some manufacturers equips their phones with pretty, but sluggish home screen. You may want to use a simpler and faster home screen apps. Also, live wallpapers kills snappiness; if you want to use them, use the simpler ones.

Do NOT use Task Killers, especially the automated ones. You should not Force Kill an applications unless you are sure that the application has gone extremely wrong and the application is ignoring a more polite requests to shut down. Force Killing applications may leave dangling resources in system services that cannot be safely cleaned up. Leave the job of killing applications to Application Life Cycle.
You should not need to clean caches, caches are there to speed up applications. If an application's caching causes it to slow down, report that to the developer as a bug.

Cleaning out cache may temporarily help with #1 (low internal memory), however cleaning cache is only a temporary fix. The application will just generate the cache again, and your memory will fill up again. Some applications allow you to adjust the size of the cache, which is much more useful permanent solution than cleaning out cache. Generally you want to give applications as much cache as possible while still having a decent amount of space in the internal memory.
Applications that have big caches (e.g. maps) should cache to the SD card, file a bug report to the application developer if they don't.
Due to the nature of caching, there are times when cache may become inconsistent and this may confuse the application, possibly causing random crashes, slowness, ANRs, or other random behaviors. This sort of thing is rare, but it does happen. Generally, you should leave the cache alone unless you suspect there are erroneous behaviors that may be caused by bad caches.

Upgrading Android may bring performance updates, however higher Android versions tend to be bigger than the previous ones and may cause #1 (low internal memory). If an upgrade leaves you with much smaller internal memory that you cannot install all of your favorite applications and have some space left, you may want to stay at an older version.

Android 2.2 (Froyo) comes with a JIT compiler (Just In Time Compiler) that will increase CPU-bound programs by up to 5x (in my Spica, JIT raises Linpack's score from ~3 to ~9). Sluggish program is usually I/O bound, but helping with CPU-bound processes helps quite a bit.
Android 2.3 (Gingerbread) have an improved task management, the Application Life cycle will kill applications that causes sluggishness and battery usage. Gingerbread also have concurrent garbage collector, which should reduce random stutters/pauses.

Some applications can slow down when they have a large amount of data or a large number of items to manage. For example, the stock SMS app on the Incredible gets progressively slower as it accumulates more messages. The only way to fix that is either replace the app, delete messages, or archive them off the phone (SMS Backup+ is great for this).

items marked (!) is potentially dangerous


Is there a setting to allow folders to be uploaded from a PC/Mac to an Android phone via bluetooth?

I use an app called AirDroid which allows me to upload folders/files to my Android phone. It is not done via bluetooth, however. It's done through my 4G connection.


Android Auto works with out a WiFi or data connection

For me at least, my local area has been automatically downloaded to be used offline. Has yours?

In "normal" Google Maps, outside of Android Auto, go to the hamburger menu, then Offline maps. Mine's currently set to "Home, 52MB, expires 21 April 2020", which corresponds to a square about five miles across.

There's loads of settings in there for you to tweak.


Broken Screen on S6 Active. How to pull files from it?

In normal scene it should be recognized in pc but some OEM have their phones such way that it won't be detected till it is locked

So try to see if it is unlocked and when you are sure that its unlocked connect it to PC then on guess work you can select the usb settings from notifications and click MTP and to do so refer to s6 usb/MTP settings  videos(youtube) and tap exactly at the screen as in videos and you should get it


Transformer Prime, VPN and password protection

Found this, it's a hack but it works for on my galaxy nexus 2.1.2
Here's the steps:

Set your lock screen security to what you want, slide/none
Go to create VPN profile
Create a pattern lock
Setup VPN profile
Lock device
Unlock but input the wrong pattern until device locks for 30.
Tap "Forgotten Pattern"
Enter your google account details.
Cancel the "Screen Security" page
Now device will unlock without pattern requirement

Source: Connecting to VPN forces having secure screen lock


My Windows laptop wants to repair my phone, but my phone is happy

I had that on my old HTC Magic a couple of times, it is supposedly down to not properly doing the Eject Disk bit in Windows and Unmount drive bit on the phone before unplugging it.

After it had annoyed me enough times by asking me to repair the disk every time, I unplugged the micro-SD card from my phone, put it in a USB SD card reader, plugged that straight into the PC and let Windows run the repair. This time the repair completed successfully, and after plugging the SD back into the phone I didn't have any more problems with it (for a few months at least).


Help to recover accidently deleted calendar data

This question is related more to Outlook than Android. Android syncs with google calendar and even if that case, deleted calendar events cannot be recovered (Google Support -
Can I recover a deleted Calendar event?  You can try to:

Go to your deleted folder in Outlook (yes I mean deleted mail) and check if deleted events are there. After deleting they go to this place.
Check if you have any Outlook backups
Check if you have any android backups, maybe you use Titanium Backup or similar software?

Other than that I can't think of any other way of restoring your calendar events


I've never seen this option built-in, but there are several apps/widgets on the Playstore offering a "quick boot" as well. The term is a little misleading, as it's usually not a boot at all.

For some background information, let me first refer to my answer on Can somebody explain the boot process of an Android device?. Quick-reboot usually kills everything down to the "system server", so Zygote has to start it anew. As Zygote is the parent to all apps, basically the "Android-part" of the system is completely reloaded – while the underlying "Linux-part" keeps running.

From the users' point of view, this looks like a "quick reboot": the graphical interface (all apps, including the home screen) disappear, and then the system comes up again exactly like after a "boot". But during this process, the first 4 steps of a "real boot" (as outlined in the linked question) were skipped.

I'm not 100% sure if the "quick boot" option you are seeing there is the same, but it's pretty likely. Because, if it were a "full boot, just quicker" – then why shouldn't that be used in the first place?


Finding reason why app stopped in background?

You can try Logcat Extreme.
Then in the settings prioritise errors.


How does an app such as "Plants vs. Zombies Great Wall Edition" get downloaded or purchased on Android?

Apparently it is not compatible with Asus Transformer after ICS update. Source:

Amazon page for the game
XDA thread about this problem
Wikipedia page for Transformer Prime

Plants vs. Zombies is listed as incompatible for my Transformer too (on Google Play).


How to allow an app to take screenshots automatically?

Ok, so I got one possible workaround: use the Automate interact touch block to click on the confirmation button, like in this flow


how to mount storage and data partitions in recovery mode in adb shell?

If you're using a custom recovery:
CWM (Clockworkmod-based):
1. Use volume buttons to navigate and power button to select
2. Find "Mounts and storage" menu
3. Select "Mount /system" and "Mount /data"

TWRP (TeamWin's):
1. Tap "Mount" in main menu
2. Tap "data" and "system"

Manual way (using adb command):
Run adb shell and run these in the given sub-shell:

mount -o rw /dev/block/bootdevice/by-name/system /system
mount -o rw /dev/block/bootdevice/by-name/data /data

In case /dev/block/bootdevice doesn't exist, run:

fdisk -l /dev/block/mmcblk0
# If it shows a lot of entries, find the partition number of system and data manually then
mount -o rw /dev/block/mmcblk0pX /system
mount -o rw /dev/block/mmcblk0pY /data
# X and Y are the numbers you found from fdisk's output


I want to connect my mobile to system in office through reverse tethering

Connect your phone to the PC
Enable USB tethering from Settings>More (Wireless and Networks)>Tethering and portable Hotspot
Assuming a Windows computer in office, go to Network and Sharing Center
You should see two active networks, one from your ethernet and the other from your mobile phone (unidentified network)
Click on (Ethernet) Connections: Local Area Network
Properties
Click on the Sharing tab and enable the first option. Click Ok and you're done

This method will work well if your office does not use a proxy server to log in.


Set my phone contacts to sync to Google not Google to phone

When you're done organizing your contacts on the Google Contacts page, and before syncing with your phone, go to Applications->Manage Applications and clear data+cache of the contacts app (plus some other service I cannot recall currently, something like a contacts provider if there is). Then open your contacts app to verify no contact is left.

That done, sync again -- as there are no contacts on your device, it cannot upload anything (and thus not mess things up again), but should simply download the data from the Google server.


How to redirect complete outgoing phone's traffic to a proxy server?

It sounds like you are describing a VPN (virtual private network). A VPN directs all traffic (whether http or other tcp/ip protocols) through a specific server, usually with the intent to encrypt traffic between the device and the VPN server.

However, encryption isn't necessary, and a VPN would have full control over routing, which means you could customize a VPN server to block specific requests. Or you could redirect requests to unsafe/undesirable websites to a 'block' page of your choosing.

Almost all android devices have VPN capabilities built-in. You should look into that technology. In order to force the user to go through the VPN, you will need an app that can be set as a device admin (a built-in, almost-root privilege that prevents the app from being removed) that would also set the VPN to be always on.

See this Android.SE question and answer for more details.


How to print a webpage from my Android phone?

There is no known API available for any form of printing support within the Android system itself.


As confirmed by OP disabling Chrome app fixed the problem (Settings →apps & notifications → select system apps→Chrome →disable app (to revert to the original version before updates)

I have no idea what caused this problem and only guess is Android Pie + Chrome updates didn't gel


horizontal and vertical blue lines across screen, galaxy note 5

From your description, I believe we are talking about the "Universal Switch" feature.

  "A universal switch lets you designate certain touches or gestures to control specific actions on your phone..."

I had get in confidence with this unknown feature when my Samsung S6 was stuck, thus unresponsive, on this mysterious interface control. I finally got out of that hell by a "Power+Vol UP+Vol Down+Home" restart.

more on http://www.samsung.com/uk/accessibility/product_galaxy_universal_switch.html


Turn animated gif into WhatsApp sendable video

You can use this online tool to convert it: http://www.giftovideo.com/

Regarding tools, you could use FFMPEG + ImageMagick, but it's kind of tricky finding the correct options. There is some instructions here. I tried but some of the cases didn't work.


I like Disk Usage to show simply where are the octets.


Galaxy S2 ICS 4.0.3 Wi-Fi connecting but not able to browse

Have you enabled the MAC Filter on your Router?

If you've then you should disable it or enter the MAC Adress of your S2 in the Routerconfig.


How do I disable Instagram notifications?

It's quite easy.

Go to Instagram app
Tap on your own name in stream (or the card icon) to go to your profile
Tap the 3 vertical dots next to your name
Tap Edit profile
Scroll down, tap Push notifications
Uncheck what you don't want. Voila!


Bottom portion of text & numbers are not showing my screen

Okay, I know this isn't really an answer (since I don't know what the problem is, screenshot would help), but anyway.

Firstly, try to turn your device off and then on again, it can be surprising how problems can be fixed with a simple reboot.

If a reboot does not solve the problem, what did you do before the problem appeared ? Did you install an app ? If so, uninstall it. Did you change a setting ? If so, change it back.

Try to go into the Settings, and if there is a "developer options" entry (at the bottom, under "System") go into it, and make sure the toggle at the top is set to "Off".

If nothing else works, you can always do a factory reset (which will wipe all your data), and that should fix it. (I'm not suggesting that a factory reset is necessary - it's very likely that your problem can be fixed in some other way.)

You say you installed 20 battery booster and cache cleaner apps ? That seems a bit excessive. Try to uninstall them, if you haven't already.

As a side note: these apps don't do anything which Android cannot do on it's own. (You should read this)In fact, they will probably slow down your device and cause battery drain, esp. If you have 20 of them installed.

If your battery life is less than what  you'd expect, there is a "battery" menu in the settings, which will tell you exactly what used how much battery. In my experience, this is a lot more helpful than some automagic all in one battery saver app.

If your device is slow, you probably have too many apps installed - installing a cache cleaner app isn't going to fix that.


Why Automatic App Updates In Market Don't Work?

This can happen if the download cache is full or nearly full, and the download would fill your internal storage.  Try cleaning out your caches to free up some space (SD Maid is a good free app for this) and seeing if the downloads will complete then.


How can i undo "Remove bluetooth device" from kitkat?

Make sure your both PC and PHONE are close to each other and the both Bluetooth are turned on and visible for all devices on both then go to your phone and search for devices and see if your PC will appear then try to pair then again.
There is no such a thing as 'undo pairing" you just need to pair them again.
Try that it should work usually if not check if there is any problem with your bluetooth on your pc in device manager.


Hi all. I am unable to connect my Nexus 4 to my personal PC with MTP

This seems to a problem with missing MTP drivers or which have not been installed properly.

Try this to resolve the problem:

Press Windows key + X and go device manager ,
Check if your device is visible
Locate your android device, right click it and choose Update driver software .

Alternatively

reboot PC
enable USB debugging  change from Camera mode to MTP then plug USB cable
Now plug in USB cable, wait for MTP drivers to be installed (Don't cancel the windows which says "Device driver is installing, please wait...." )

After successful install you can now access files in MTP mode


What is the solution for external sd card unexpectedly removed

Change your phone. This is happening because of the Card slot error. Hardware problem.


How to traverse camera from device via adb to my Ubuntu?

Connect the smartphone via USB, start the IP camera server app and use adb port forwarding or usb tethering to access the server from PC.

Then you can connect directly to the mjpeg video stream at http://yourphoneip:8080/video.

This script also creates a v4l virtual device if you need it.

I've measured that the streaming latency is a bit higher than a regular USB camera (<500ms vs <100ms).


Can I install Android on my HTC Touch HD?

Yes, this is possible with a custom build of the Android operating system, available from the XDA Developers Forum.

The latest version available as of January 2011 is Android 2.2 and there are download, installation, and troubleshooting instructions in this XDA Developers forum post.


Troubleshoot fastboot error 'remote: ' command not defined

I found the problem eventually.

In the developer options, there is an option OEM unlocking which must be allowed. Otherwise fastboot fails.


Removing apk of inbuilt apps completely (without rooting)

Unfortunately, that is just not possible. The apk of system apps resides within system partition. The privileges (access rights) required to make changes in system partition are not given to ordinary users. We can only gain such higher privilege through rooting.

That said, if you are dealing with space issues than you are looking at wrong front. System partition has nothing to do with those space issues since only a system wide update/upgrade makes changes in it. They are caused by data partition. It is possible that you may have updated some system apps, so now, they would be having an apk in system partition and another apk (the latest update) in the data partition (now that is one precious space). You can delete the ones in data partition by disabling that system app. When you attempt to do that you would get something like this:

OK, and the apk from the data partition would get deleted.


Recovering from lengthy rom upgrade on HTC Desire S

I disconnected the usb and then some sort of debug screen showed up and gave me an option to reboot the phone. To my astonishment I still had Android 2.3.5 installed and working. It looks like installation of new ROM newer really took off.
The second attempt to upgrading rom succeceded.


Apps use mobile data when mobile data is off

On modern devices like yours "mobile data" is not only used by apps.
Instead basic services like phone calls are also transmitted as "data". This is calls Voice over LTE (VoLTE). In a LTE network this is the only way to do voice calls, there is not voice network anymore. LTE devices that don't support VoLTE have to downgrade to 2G/3G for voice calls.
Even if you don't do any voice calls the phone registers itself in the network, and for doing so it needs data. Also new voice calls are signalled via mobile data. Those signaling data is not a high amount of data, but a value as you have shown in your screenshot should be reasonable for a month of VoLTE data usage.
The strange part is that the LTE voice data if you do a voice call is typically not counted as "mobile data".
Typically this behavior is making big problems when you are abroad in a roaming network with extra charges for roaming mobile data, because the mobile network providers seem to be unable to correctly mark this VoLTE signalling data as VoLTE data for which you are not charged. Instead the say "you have transmitted data via mobile roaming" now pay us the base fee for using mobile roaming data.
A second use case where data is is always use are MMS. This is the way it works for mobile generations.


If the Receiver Deleted the whatsapp before your message received , then the receiver will not get the message after reinstalling the Whatsapp.


I'm pretty sure you cannot do that as the phone needs to connect to one protocol at a time.  I have a Wi-Fi hard-drive and the manufacturer of the device states that once you connect to the device you will need to either turn the device off to get cellular signal again or disconnect from it.


Messaging apps no longer work right after last update - Galaxy S8 Plus

It is Samsung's Oreo update.  They removed the feature.  Complain to them. The more that complain the more chance the will fix it.


Yes it works and I have been using it for some time now.

Download the XMod APK This is official site
Now you need rooted bluestacks
Here is the link to Rooted Bluestacks I am using
This bluestacks does not require rooting s it is pre-rooted
Install it on PC and open the XMod APK using Bluestacks

And that is basically it. I hope it helps. :)


I have the Galaxy S3 and when I plug mine in it automatically connects as an installer, so if I want it to connect as a media device I manually have to change it to that. For your situation you might have to do the reverse. If you are keeping the "connect as a media device" and "connect as a camera device" box check all the time in Developer Options then what you can try is plugging it in without those boxes being checked, then see if it will default back to connecting as an installer when you next connect it. It also depends on what phone you have and since I don't know if you have the same phone as me or not I can't really give a super detailed answer specific to your phone.


How to take selected-area-screenshot to clipboard once it's selected?

Instead of using Samsung select copy paste use the inbuilt options from ezPDF

From the floating 3 dot menu at right centre → Menus → Edit → snapshot → select the area and take snapshot → share with → Squid (choose always since you do that frequently).

The picture gets posted in Squid without switching apps. Here's an example of both apps in split screen mode with transfer of screenshot


Can not update to lollipop due to TWRP recovery

You can either upgrade to L via TWRP itself (some reported having trouble with TWRP 2.8 and suggested trying 2.7) or revert from TWRP back to stock recovery if you want to go the OTA way (I guess that's what you're trying to do, you're not clear on that in your question).

Also instead of TWRP you can try ClockworkMod recovery.

edit: typo


I use owncloud and its contacts plugin now.

For syncing I use DavDroid

Here is the way I managed to transfer the contacts from ActiveSync+Tine20 to CardDAV+Owncloud:

On Android device connect via ActiveSync (aka Exchange) to tine20.
Do sync, wait until sync finished.
Don't wait too long now, since after some minutes all contacts are lost again. At least on my device (LineageOS Android 7.1.2)
Go to contacts app in android.
Export all contacts to VCF.
Remove ActiveSync/Exchange account
Restart android device. List of contacts should be empty now
Install DavDroid (or an other CardDAV sync app)
Go to Contacts/Accounts add a DavDroid account. I use owncloud, but other CardDAV provider should work, too.
Go to Contacts/Settings set the new account as default
Got to Contacts/Settings/Import import the contacts again, which you exported in the above step.
Done :-)

Feedback welcome. I guess above guideline can be improved, tell me how, or do it if you have enough credits on this site.


I use this technique from this page http://labnol.blogspot.in/2007/10/merge-multiple-rss-feeds-feedburner-mix.html to aggregate my feeds in feedburner and feed them to Flipboard.

  Step 1: Go to the Yahoo! Pipes website and Create a new Yahoo! Pipe.

  Step 2: Drag-n-drop the "Fetch Feed" tab from the Sources tab to the
  main drawing panel.

  Step 3: Add all the different Feed URLs in the same Fetch Feed Module
  (click the plus icon).

  Step 4: Once you are done adding all your RSS feeds, drag the lower
  circle from Feed Fetch module to the Pipe Output at the bottom.

  Step 5: Give some name and save this Yahoo! Pipe. Now run the pipe and
  you will see a new RSS feed - syndicate that feed via FeedBurner so
  you can even track the feed subscribers. It's all very simple.


Is there any widget for iframing a link/url and make it viewable on homescreen in full or resizable area?

I think this might be what you're looking for:

Meta Widget: Create widgets from almost any website element
Websnap-Web capture,Web widget: take a snapshot of any web page or part of a page and display it on your Android home screen with a refresh interval of your choice

Feel free to search Google Play for related apps.


How does NFC Task Launcher toggle Power Saving and how can I get Tasker to do it?

You can create the task in NFC Launcher, install Autoshortcut (https://play.google.com/store/apps/details?id=com.joaomgcd.autoshortcut&hl=en-GB) and then you can call the NFC launcher task within Tasker via the Plugins>Autoshortcut>Configuration>Run Task.

I just got my unrooted Note 2 setup to disable powersaving when on USB power and enable it again when I unplug it :-)


call recorder for Moto G - clear opponents voice

Good news also. Boldbeast Call recorder works perfectly for Moto G / Moto X, it records calls loudly and clearly in two directions. Root is needed.

Here is the app: Moto G / Moto X Call Recorder

This app is free.


Marketplace offers downloads in notifications but when I tap notification none are available

If you have multiple Google accounts setup, click menu, then accounts, to make sure the proper account is selected. Then click menu, then my apps.


I discover this method to show the cursor on Samsung A6+ (2018) using the Huion Pen Tablet HS64. It is not an "arrow-type cursor" but a "small-circle cursor" similar to the Samsung Note series with S pen.

Go to Settings
Open About phone
Under Looking for something else?, tap Reset. (If you do not see the reset, go to General Management and then tap Reset)
Tap Reset setting (just go through to make your settings can be reset)
Reboot the phone
Just do the 1st, 2nd, and 3rd steps, and then tap the Reset Accessibility Settings (just go through to make your accessibility settings can be reset)
Reboot the phone
Plug an OTG with a USB cord to the phone
Plug the USB cord to the Huion Tablet
The cursor will appear on the screen as a small circle

This is the method I used to my Samsung A6 plus 2018 and it worked perfectly. Now I can use my Huion Pen Tablet for my Digital Arts.
Note: I can't tell you guys if your Samsung phone can be work. I just want you to share this method. But I really hope can be work on your phone too. Please tell me if it works for you.


Flashed wrong recovery on a QTAB with no bootloader or fastboot. What can I do?

Without knowing the exact device model you have I can only tell you to go to the website and download the appropriate firmware. Get the right file depending on your model number and read the instructions for flashing the stock firmware. This will give you a complete stock tablet back (system.img / recovery.img / boot.img etc).

The instructions seem pretty straight forward even though the procedure is a little bit weird...anyway:

Software needed: PhoenixSuit

  Step 1 :Open PhoenixSuit application

  Step 2: Choose firmware tab

  Step 3: Select the image file from your computer

  Step 4:Unplug the qtab + Click upgrade

  You  will see this message : "Upgrade Firmware to Device?" Press Yes

  Then you will see this message "No Device attached!" - Press Ok

  And press ok for the third message also

  Now long press your power button for atleast 10 seconds
  Press one hardware key except the power button and do not release
  Connect the device to the computer
  Click power key for about 10 times
  Release all keys and the device will upgrade

  If it didn't work, repeat these 5 steps
  Instructions taken from here.


Settings > Frequent settings > All settings > Picture [settings] > Brightness
At least my Android TV has this path.


I disabled the DPI override for Chrome in the App Settings app for Xposed, and the problem went away.

Now I'll search for a different way to adjust Chrome's DPI.

Notes:

This issue did not occur in Chrome 52, the stock version for this ROM
Clearing Chrome app data did not fix the issue

In the end, I set the DPI for the entire phone to match the desired DPI for Chrome, via the ro.sf.lcd_density setting in the file build.prop.  I then changed the DPI of other apps as necessary with Xposed: App Settings.


You could have a detailled explanation of what is in the /proc directory in the linux man page


How to make an incoming call in genymotion emulator in android?

Hey i found call function in geymotion :) #thanks @Rajkiran

The Phone widget allows to test applications relying on telephony features and observe their behavior when receiving a call or a text message.

To use the Phone widget, click  or Ctrl + 8.
To simulate an incoming call:
1.Enter an incoming phone number.
2.Click Call.

To simulate an incoming message:

1.Enter an incoming phone number.
 2.Enter a text message.
 3.Click Send message.

The text message is displayed in the virtual device via a notification and can also be read in the Messaging application.

:( This feature is only available with Indie and Business licenses.


How do I disable receiving calls and messages?

There are several ways to accomplish this:

Airplane mode: You say that it doesn't allow GPS, but it does. You need to enable GPS when you're in airplane mode.
Disable radio: In dialer enter *#*#4636#*#*
Select phone info and pick turn off radio.
Take out your SIM card. This one is only applicable if you have a GSM device.
You can enable call forwarding in Phone settings -> Call forwarding.

If your only problem is that calls interrupt music than you can try using a music player allows you to set how audio focus changes are handled. One example is Poweramp.


This appears to be a fine update to me. If you check this page on sammobile, it has firmwares named similar to yours. The final base number is pretty same (UIBOJ3).

Besides that, android phones cannot be hacked that way unless you install some real (real) bad app, even then you should be able to recognize such a thing. So I would say just go ahead, this update is fine from security point of view :)


It's not fool proof and you'll need to figure some parts on your own, but:

Create a backup of /data in recovery
Unpack the backup on your computer
Find your SMS app in restored /data/data. Most likely the app name is starting with com.android..
Flash your new system image
Using adb, use ls -l /data/data to display permissions of the SMS app directory. Note the permissions.
Restore the SMS app directory using adb or Android file manager with root permissions
Change owner/group/permissions to be the same as you noted earlier.

Your SMS should be back at this point.


Can we connect a normal earphone / headphone to a Android device?

The typical audio only jack has 3 rings, usually call Tip, Ring, Sleeve (TRS). These typically map to Left, Right, and Ground. Phone manufactures wanted to make this jack work with existing headphone so they used a connector with 4 rings, called Tip, Ring, Ring, Sleeve (TRRS). These map to Left, Right, and Ground just like the 3 ring, but the final connector maps to a microphone. This makes it so that if you plug an audio only cable into it, the microphone input gets connected to ground so nothing is hurt. It also means that if a headset with microphone is connected to an audio only device, the microphone is connected to ground, also hurting nothing.

Sources:

What protocol does a headphone jack use?
Leads Direct: Jack Plugs & Sockets


You have downloaded an app using an advertising platform that uses these ads.

These ads are actually against Google Play's Developer Policies, so when you find the app (see below) that is doing this, be sure to report it.

There are a few ways to find the app:

When did the adverts start? If you can remember this, try and think of any apps you might have installed not long before they started, and uninstall them.
Are there any apps in your Manage Apps area that shouldn't be there? Uninstall them, and see if the adverts go away.
Check through all your apps, and look at the permissions. Adverts like these will need loads of permissions, so if you see an app with many permissions which it may not need, uninstall it and see if the adverts go.

If the worst comes to the worst, you can factory reset and reinstall all your apps one by one, however this is a last resort, as you will lose all of your data.


Reason SD cards come FAT formated instead of Fat32?

Generally FAT is used when possible simply because it's compatible with more (older) devices.  While this is not much of an issue today, it probably continues out of (1) very slight market advantage and (2) the fact that factory machinery is set up that way and it would cost owners to change it.

In any event, Android can certainly read FAT32; if it couldn't nobody would be able to use SD cards larger than 2GB.  There should be no problem with Android being able to read your card after a format.


How do I upgrade my Android OS from 2.2 to 2.3 on an HTC Desire?

Check out on this following forums

modaco
Cyanogen
XDA Developers

Note:  Please ready instructions carefully before performing anything. You can break your phone. You have to do everything on your own risk


The first place to go, would probably be to the specifications' page on the manufacturer's website or other alternative reputable websites offering the same kind of information.

For a quick check this website doesn't state your device as being supported for USB OTG. The other one GSmarena: Acer Liquid E2, doesn't list this functionality, which most likely means your device doesn't support OTG.

The other ways of checking may be using an application e.g USB OTG Checker ✔ , just as Izzy mentioned, they normally check the presence/absence of certain parameters required for USB OTG to work. For example they  check;

  the presence of USB Manager,  the presence of
  android.hardware.usb.host.xml or find the list of connected OTG USB
  devices.

It is important to note that this functionality should be supported by the hardware as well as the kernel of the phone.

  Additionally some users claim the possibility of enabling USB OTG by using tools as  StickMount or USB OTG Helper (if the chipset supports OTG and the device doesn't) when rooted , or using a using a usb Y cable (if your chipset doesnt support OTG) to power up pendrive externally.


What determines if a phone will accept a microphone in the audio jack - hardware or software?

Most likely it's a difference in the TRRS layout of the headset.

For example, I have two "similar" headsets, one that came with Samsung Galaxy S and another that came with Samsung Galaxy Tab 10.1. Even though they look similar to the naked eye, if I use the Galaxy S one with my Tab, I only get mono sound due to a minor difference in the TRRS layout.

Sometimes I can remedy this by pulling the jack a little out of the plug, but it's very tricky to keep it in the correct position.

Anyway, you should test the jack with different headsets to verify that there's no physical damage to the jack.


SD Card as a Network drive in Wi-Fi Network?

A good application to do that is the Samba Filesharing. It shares your sdcard, making it easy to transfer files from/to your phone.
Settings
After installing the application from Google Play, open it and fill a password by touching the password menu. The default username is SDCARD and the default Workgroup is WORKGROUP. You can leave it that way or change it in a way that suits you.

I'd recommend enabling and selecting your WiFi in the WiFi White List . That way it only enables Samba sharing when connected to your preferred Network.

That done, you only have to go to your Network Shares and look for a device called ANDROID.
Login

Name: SDCARD
pw: (the one you defined earlier)

Open the shared folder and it will ask again for credentials, and you're done.
Here you have a video that completes this information.


Android Wear says it needs to update Google Play Services but nothing happens

I ran into the same issue recently when using transit app. This is how i updated Google Play Service. On your Android Wear go to settings -> About -> Versions -> Google Play services. When you press on Google Play service it will check for update and install it.


You can't force android to use all the RAM you have, all you can do is keep frequently used apps open i.e., don't clear them from recents so they should stay in memory and should open fast than launching when they were closed


How to clear the unlock code off my htc desire an the factory reset isint working

Back in the day, some of the phones would do one of two things if you entered the wrong pin/password too many times, It would either factory reset the phone or it would ask you to login with your google account. So lets hope for the second option. So if your sister remembers her login info, it would be worth a shot at the very least.


Google navigation stuck on "Checking navigation availability"

It seems I was running the 5.0 version of google maps. I tried to search for an update on the market, but I couldn't even find the app. The most surprising thing was that using the exact search strings, I was able to find it very easy in the browser.

I downloaded the 5.2 apk, and I installed it from the SDCard. Afterwards, everything worked.


Karbon A9+ System space and Internal Storage

Just use DS super App2SD lite app, which gives you to system apps to your memory card
And this app work in only rooted phone


How to change the default saved user and password for sites in browser?

I don't think it's possible to clear only a single saved password in the stock Browser, but you can do Menu > More > Settings > Clear passwords to clear all saved password.


How can I uninstall the Cyanogen Mod 7 for my Htc Incredible 2?

It looks like you purchased a used phone on Amazon. CyanogenMod is an extremely popular Android ROM that tries to give you something close to a "Pure" Android experience by removing customizations that HTC and other manufacturers put on the phone. Personally, I would recommend you keep CyanogenMod.

But if you just don't like CM, there is a tutorial on XDA Developers that will guide you through the process of restoring the phone back to its original state. Restoring the default software looks pretty difficult for the Incredible 2.

You will need to get...

The HTC ADB Driver
The Android Software Development Kit
The SuperOneClick tool
Apparently, two versions (Links: 2.2 and 2.3) of the Android software for your phone.

The steps to follow are listed in that post, but they may be outdated. If they're wrong, or if you mess up somehow, your phone could very well get broken permanently.

All in all, you're free to try to remove CM from your phone. However, you may want to consider keeping it for two reasons:

CyanogenMod is considered by many to be superior to HTC Sense (Especially older versions like on the Incredible II).
Trying to remove it could lead to very bad things, like a permanently broken phone.

Please note that all the links are provided by third parties, not by HTC. I got the links from the XDA Post that I linked to in the second paragraph


Camera app can't access sd card anymore after formating it as internal

Meanwhile I found the solution. In the app settings I had to delete the app data and cache.
That set the settings back to default which solved the issue.


Why the game is compatible in BlueStacks, but not in Genymotion?

It sounds like the application is only compatible with ARM CPUs, but not with x86. Genymotion doesn't have an ARM translation libraries installed due to intellectual property reasons where Bluestacks have them installed by default.
Here is the response which I've received from Genymotion support team explaining this in details:

We do not offer 32-bits AMI images. However, it shouldn't be a problem because 32-bits applications should be compatible with x86-64 CPUs that Genymotion on Demand is using.
It rather seem that this application is only compatible with ARM CPUs. There is an ARM translation tool that can make your application work on Genymotion. This ARM translation tool is present in Bluestacks and not Genymotion by default.
We do not provide ARM translation tool by default because it's not our intellectual property.
Genymotion support team

As per above message, an ARM translation tool needs to be installed on Genymotion in order to make the application work properly.
Normally if you're developer, you only need to add the x86 build target to your current targets.
Otherwise, you need to install ARM to x86 translation libraries, which you can find on the Internet or you can contact the developer of the application to ask for x86 architecture support.

An ARM application running on Genymotion is less stable and efficient than an x86 application. Therefore, we strongly recommend that you only use x86 applications with Genymotion.

Source: Why does Genymotion return an error message when I try to install an ARM application?

Suggested steps to install an ARM translation tool for Genymotion:

Download an ARM Translation tool (e.g. Genymotion-ARM-Translation_v1.1.zip).
Drag & drop the ARM Translation tool to the Genymotion Home Screen
Once you see ARM Translation flash message, confirm with OK.
Restart device if required (e.g. adb reboot).

Source: How To Download & Install ARM Translation v1.1.zip for Genymotion.
Related: Genymotion with Google Play Services for ARM at Gist.


suddenly can't change language in keyboard

Try disable all accessibility services. It may be a security measure to prevent malicious apps from changing keyboard without user interaction, since an accessibility services can automate the process without the user knowing.


This means that you wont be able to play games from your browser who are written in Java (Java 2 ME platform). Some of the browser games are written on that particular platform, so you will not be able to play them.


Why does my phone keep getting stuck when performing a backup?

Go to Rom Manager and flash an older version of clockwork recovery.  Then flash the latest version of it.  Does that help?

Otherwise: do you get any sort of error messages?


Why copy within or upload to ES File Explorer rename php file as txt?

i guess that is a bug but you may use bulk rename utility

Section 1:
match: (.*).txt
replace: \1

section 11
remove

Section 12:
filter: *.php.txt

hope it helps


Play Store 4.9.13 insufficient storage error and icon issues

The correct answer to this problem, and I always see wrong explanations, is that you have a duplicate /data/app-lib folder for the app or apps that are giving you that error.

To fix: Using adb, terminal, or root explorer:

compare /data/app to /data/app-lib

you will see, for example:

/data/app/example-app-1.apk
/data/app-lib/example-app-1
/data/app-lib/example-app-2   <--EXTRA

OR

/data/app/example-app-2.apk
/data/app-lib/example-app-1   <--EXTRA
/data/app-lib/example-app-2

So for 1st example remove directory: /data/app-lib/example-app-2

and for 2nd example remove directory: /data/app-lib/example-app-1

Then your app will install just fine!

ALWAYS REMEMBER TO KEEP THE SAME NUMBERS,

IF THE APK IS 1 REMOVE 2... IF THE APK IS 2 REMOVE 1!


I can reverse tether now by using alias but it stops on adb shell command

This is more of a linux question, and it may need to be moved to superuser.se, but I can answer it.

On linux, you string commands using && (or || or just ;). With &&, the first command must finish executing and have no error codes in order for the next command in the sequence to run.

In your setup, it looks like you want to open an ADB shell, and then run netcfg rndis0 dhcp on the adb shell. However, Linux doesn't do that. Instead, it is waiting for the ADB shell to exit without errors, after which time it will run netcfg rndis0 dhcp on the desktop computer's shell.

If you want to run a command on the Android device, you don't start an interactive ADB shell (the default); rather, you pass the command like so:

  adb shellnetcfg rndis0 dhcp

You'll need to change your alias for n to be a variable instead. Remove the alias directive so the line just reads n='netcfg rndis0 dhcp'. Then change your alias for t to be as follows

  alias t='r && sh $n'


8-digit password prompt only when SIM is in device (it's not the PUK)

Since the PUK does not work (which usually would only be asked if the PIN has been entered wrong three times) and the prompt says "Network locked" this is most likely a SIM-Lock of the phone by the carrier.

Using a SIM from the carrier the phone is branded with you should not get this prompt and it should simply work, to use a SIM card from another carrier you will need the unlock code.

You can get this code from the carrier, most carriers charge only a very small amount or nothing at all after some period of time.


This functionality is already inbuilt into Android.

Open your dailer
Enter *#*#4636#*#*
Select Usage statistics
Sort by Launch Count.

As far as I know these statistics get reset every time you reset your phone. Hope it helps.


How to automatically enable WLAN when an app requests location info?

As far as I know this is not possible. IMHO, it contradicts Google's incentive to have an as best as possible geolocation service.

Some background information:

Google maintains a huge database for its geolocation service ("Access coarse location" permission). It consists of:

Wifi access point mappings: Wifi MAC address resolve to a geolocation
Cell tower mapping: Cell tower ID's resolve to a geolocation

This database is "community" crowd-sourced by the huge Android user base, aka. everyone that has Google's location service enabled (see below)
Google is interested to have a high quality database, i.e. convince you to opt in to allowing your phone to be part of the crowd-sourcing
Hence: If you want to use 'coarse location' services from Google you opt in to constant data mining as long as it's enabled

PS:

Disabling Wifi only cuts you off from one of the possible information sources. Having Cell tower ID's will still give you coarse location, but with lower accuracy
Some may recall the Skyhook vs. Google dispute where Google seemingly pressured Motorola and Samsung to prefer Google's own geolocation service over that of Skyhook (out of fear for losing part of the crowdsourcing community if those two big players would have used the 3rd party Skyhook service). Source: TheVerge


Are you rooted? If you have root, you can use a ROOT browser and put the google services app manually in the /system/app folder then reboot. It SHOULD work.

And when you say google services, do you mean "Google Play Services"?


How to remove apps which doesn't allow uninstall option without rooting smartphone?

From what I understand :

MY AIRTEL is a system application that's installed in the /system
partition
Updates to this app are stored in the /data partition

Without rooting your phone, you only have read access to /system, and read/write access to /data. That's why you can uninstall MY AIRTEL updates (which are in /data), but not the app itself (which is in /system). And since Google Play has a newer version, you'll be prompted to update it again, etc.

Rooting your phone will allow you to gain write access to /system and hence uninstall any system application.


my phone is not booting or cant access to recoverymode

Download and install SamsungUSB drivers, if not already present.
Download and extract Odin zip file.
Download and extract ROMfile. You will either get multiple .tar.md5
or .tar files. Launch Odin Odin3 v3.07.exe asAdministrator.
Click on PDA button and browse file with PDA in its name (if there
is only one .tar/tar.md5 file then it is PDA).Click on Phone
buttonand browse file withMODEM in its name (Ignore if not
present).Click on CSC button and browse file with CSC in its name
(Ignore if not present).Click on BootLoader button and browse file
with BOOT in its name (Ignore if not present).
Make sure that only Auto Reboot and F. Reset time arechecked. Also
make sure thatRe-partition check box is unchecked.
Switch off and power your device into Downloading modeby pressing
and holdingVolume Down + Home + Power button and releasing only when
you see a Warning! screen. Then press Volume up button to finally
entering in downloading mode.
Plug in your device into PC using USB cable. If Odin detects your
device the ID:COM box will turn into light blue or green. If not,
then try reinstalling your device drivers or plug it into a
different USB port.
Once every step mentioned above is successfully completed,
press Start to begin the flashing procedure. DON’T TRY TO INTERRUPT
FLASHING PROCEDURE ANYHOW OTHERWISE YOUR DEVICE WILL BE HARD
BRICKED.  Flashing process takes time, so be patient.
Once flashing process is successfully completed, Odin will
show PASS. Your device will reboot to 4.1.2, first boot is always
very long so have patience.


How to bypass the Goggle account password request on a Z353VL ZtE flip phone both touch screen and hard keys

I used this method on a old vodafone device i had a long time ago, almost certain its was a Zte.
 Ok when promted to connect with wi fi, you first connect to your network, then type any name in ad alternative network connection, tap and hold the name u just typed.
You wil get a option to share, on the share screen tap and hold gmail,  the "app info" screen will pop up, here you select notifications, go to the last option witch is "more settings", on that screen select the sub menu and go to "manage accounts"

Ok now you should be in your normal settings menu, here you need to open chrome to download files to help you finnish the process, depending the version of Android you have, there are various ways to do this, Mine was a kitkat simply go to applications and launch chrome.
 There is a way with the google app to launch chrome too, tap and hold the google app in the device manager the "app info" screen will appear again go to "notifications" and select "more settings" open the "manage card history" and select chrome.
There are many sites and apps with will assist you from here,


Get files of phone with broken everything

If your ROM and the functionning touch surface of your screen allow it, try to go to settings and activate 0°-90°-180°-270° screen rotation. By turning your phone sideways or upside-down, you might then be able to enable USB debugging again, and proceed to get your files with adb pull.

However, since yout OTG adapter doesn't seem to work, it's likely that your USB port is broken too.


Install OpenGApps in Android Studio Emulator (Marshmallow)

I suggest using Genymotion for all your emulator needs.
After getting Genymotion set up with emulated device of choice, download ARM translation and GAPPS.
Those files come in a .zip format, do not unpack them!

I would have normally installed ARM Translation which will let those ARM apps be able to run on this x86 virtual device. Afterwards Install GAPPS (make sure to use appropriate version for the system you are building).
To install the above mentioned files I have used the drag and drop technique. Restart the device when done.
 Hope this helps


VPN capabilities (PPTP, L2TP and IPSec) for Android were included from version 1.6 (Donut) onwards.


Non-root methods to mount USB storage devices

This depends on your device. Sone Android devices have USB ports that can work in host mode or support USB OTG. These devices can at least have read access to the USB drives, some can even use them as full mounts. One app that allows read access on a lot of devices is Nexus Media Importer. You can use it to browse media and copy files to internal storage.


Discrepancy between sizes of apps listed in Play Store vs. actual installed app size

Apk and zip files are essentially the same, compressed. Before the system can use the file it needs to decompressed. So the file is one size when downloaded and another size when installed.

Also note sometimes when apk's are installed, after being opened some data may need to be downloaded. So file size file will increase again.

Differences in size are noticeable when comparing between Android markets, one shows one size and play store shows completely different size.


I couldn't find a list, so I made one myself with DPI :

http://blog.blundell-apps.com/list-of-android-devices-with-pixel-density-buckets/


How to manually transfer entire Whatsapp installation to another device (the hard way)

I was encountering the crashing behaviour trying these approaches too, but @DeathMaskSalesman seems to've been on the right track—the crashes are indeed a permissions issue.

If you remove WhatsApp entirely, reinstall it, and copy /data/data/com.whatsapp over and adjust the permissions correctly before launching it the first time, then it should just need to reverify your number to work.  This worked for me.

To adjust permissions, first use ls -la to check the permissions on what's put in the /data/data/com.whatsapp directory upon install, e.g.:

drwxrwx--x   3 u0_a105 u0_a105  4096 2018-07-14 00:55 cache

Then use the username and group (here both u0_a105) to rename the files after you've copied them in:

chown -R u0_a105:u0_a105 /data/data/com.whatsapp/*

Then WhatsApp should launch okay without crashes, and retain settings, messages, and multimedia.


What are the Wi-Fi disconnect reasons on adb dumpsys wifi?

Most likely your problems are caused by one or more attackers performing the Wifi deauthentication attack. Due to a weakness in the Wifi WPA2 protocol it allows to deauthenticate any client ("kick" it out of the Wifi it is connected to).

There are even tiny portable deauther devices  which can deauthenticate any client in Wifi range. It does not matter if the Wifi is open or protected by a passphrase. Even if the Wifi is visible or hidden (hidden BSSID) is irrelevant for this attack.

May be some attacker using a deauther is driving by (car, bus, ...) and every time your device gets disconnected.

The only counter measure to prevent such attacks is the new WPA3 protocol which is supported since Android 10. To use it support for WPA3 has to be present in the Wifi AP and the Android device.


How to turn off duplicate email notification messages?

In the settings of the gmail app there is a setting called "Email notifications".  Uncheck that setting, and you should stop getting notifications from it.


Short answer: you don't need to worry.

Provided you pay your bills, your carrier does not care much, if at all, that you root/ flash Roms and such. No extra steps will have to be taken either; its all on the sim, and flashing ignores that. Keep note you have lost your warranty, though!


Just a part-answer: i'm using a nice app for resizing images: Image Shrink (there's also a lite version).

It works via the share intent - you "share" an image to it, the app does its job and the result can be shared again (e.g. if you want to send a large image via mail and want to resize it first, easily done with that app).


How to remount sdcardfs to allow setting file permisions / ownerships?

You cannot change permissions and ownerships of files on sdcardfs.

On all operating systems based on Linux kernel - like Android is - it's possible to set permissions on files (including directories) provided that filesystem supports UNIX permissions (uid, gid, mode). Common examples of such filesystems are ext4 and f2fs.

However Android's internal (confusingly called external) storage which is accessible by installed apps at /sdcard, is not an actual but virtual / emulated filesystem exposing /data/media (which is a real filesystem) through sdcardfs. sdcardfs and its predecessor FUSE expose the emulated filesystem with a fixed set of uid, gid and mask (mode). So the commands chmod and chown have no impact, whether executed through CLI (adb shell or terminal emulator) or GUI (file explorer).

It's possible to change permission bits of file on underlying actual filesystem, but accessing /data/media requires root access because only UID/GID 1023 (aid_media_rw) has read access to the directory. And still the permissions will remain same when viewed from emulated view /sdcard.

Further reading:

What is /storage/emulated/0/?

Related:

Why chmod gives “Operation not permitted” error?
Is it possible to change file permissions on Android's internal storage?


How to Import/Export Group field in Contacts via VCF?

You are doing this on the web inside of gmail, right?

I didn't see the groups included in the VCF file either.  But they do seem to be included if you export it as a CSV.  Is it possible that you can use the CSV instead?


Will upgrading my Unlocked, Rooted (fastboot + superboot method) Galaxy Nexus from 4.0.1 to 4.0.2 brick the phone?

Well, doing the OTA update to 4.0.2 from 4.0.1 did not brick anything. Superuser is still installed and apps that require root supposedly have root permissions, but they claim they do not.

I will attempt to re-root it, as I don't see why that will be an issue.

Thanks.


Changing the numbers format when entering phone numbers in the dialer possible?

Well, as it may seen, there's no solution without relying on third-part softwares.

Instead, I (partially) solved it by changing the language for English UK, where the numbers format are without separators. Ex: 99999999.


Dash charging on lower than rated voltage - possible?

Simple answer is No, it will not work the way it is supposed to, if it works

Any charger for that matter any electrical appliance can only deliver what is expected of it when it operates under the conditions it is designed for.

That is what standards are meant for and that is what makes it mandatory to be adhered to

Your charger work may work erratically charging normally but definitely not dash charge, while it may not damage the phone. Quite likely the charger won't even fit into the wall adapter there !

See this for more
Complete Guide to Using the Correct Charger or Power Adapter (and What Happens If You Don’t)

Even within standards, compatibility and ability to fast or dash charge is tricky at times as you can see from the table for one plus 2  from OEM site given the nature of dash or fast charging

So, how do I charge?: Use a power bank to charge your mobile, Googling should help you find one that is rated for 100 V. Quick search throws up one such power bank. It may be easier to request somebody in the place you are visiting to buy it for you


What is exact reason for "Unfortunately, app has stopped"?

From a software standpoint, there are many types of errors.

All errors should have the ability to be handled as to let the application remain running, but sometimes there are errors that are uncaught. The developer is responsible for catching the errors or handling things to not allow errors to occur. However, there are some things that a developer is not able to foresee, so they slip past.

These uncaught errors can crash the application. They can range from any number of things, such as database access, file reading, values not being properly checked, etc. The program ends up trying to do something it is not capable of doing, and simply crashes.


Changing number to new phone but keeping chat history

Chat history backup and restore feature can be used only to change the mobile device. Because the backup will be taken for the particular mobile number and can be restored in the same number.

how do i change my whatsapp number without losing chat history

There is an inbuilt option in the whatsapp messanger to change the phone number without losing the chat history. Please read the official documentaion to do the same.

https://faq.whatsapp.com/en/android/27585377
https://faq.whatsapp.com/en/android/28030001/?category=5245246


Media Player starts playing when I unplug headphones

This is a known bug in Android (even in certain Eclair systems).

There's a widget called Headset Blocker that when added to any of your homescreens and activated prevents the music player from playing whenever you unplug your headest. Freeware and it works. See if it helps.


On option would be to minimize the displayed ads using an app like Blockada (not available on PlayStore).

This app filters out ads and app trackers using filter lists that clock certain requests. This usually reduces the number of ads.

A second option would be to use the multi-user system on Android (if it is available on your device). Additionally to the primary user you can create a second user which is not able to install any app.

The third option would be the Google parental control system which is AFAIK able to block certain app installations. Just switch "parent" and "child" while reading ;)


ICS: Add Google Contact Group To Home Screen

It doesn't appear that there is a native way to do this in ICS.  However, you could use the folders feature in ICS to add multiple contacts to the home screen and group them into a single folder.  Not exactly what you're looking for, but this seems like it is the best native (non-3rd party) solution in ICS.


How can I purchase apps from the Amazon Appstore without downloading them?

You can buy them from the website without downloading them. Any apps purchased through amazon.com simply get added to your account. I think that's the best you can really do.


Does the stock mail app log out from the mail-server?

About your concerns:

Connection on air

There is nothing that a log out at the end of every session would improve. If you don't use the email client, it won't transfer any data. And if you use it, it will query the server for new email etc. If the client would perform a log out at the end of every use, it just had establish a new connection again. Conclusion: Data related to the e-mail connection will be the same time on air if you don't use log out as when your e-mail client would log out every time. No gain here. Just make sure that you have enabled a secure encryption.

Bandwidth

You are right, that polling is the worst thing that could happen. But not from a bandwidth perspective. Polling is just a quick packet asking "Is there something new" and the server replying "No" or "Yes and here is the data". The data would be send later on anyways, so no big bandwidth consumption. It is more the battery life that should concern you, when you have a polling e-mail client on Android.

That said, trust the Google engineers to build a e-mail app that tries everything to reduce battery consumption. If you use gmail you are safe, because the email app will use push notifications for new e-mails. If you use an IMAP account it depends on the server if it support the IMAP IDLE extension. If you use POP3 you are doomed, because it's a plain polling protocol.


get files from sony z5 compact with broken screen

Easiest to solve with Linux, as you have USB debugging enabled¹.

Get the ADB tools running on your Linux computer. Should be as easy as sudo apt install android-tools-adb²
Connect your Android device via USB
On the Linux machine, check whether the device was detected by entering adb devices. If it's not listed, our ADB tag wiki² again has some hints
now you can use adb pull to get content from your Android device to your Linux machine

Of course, finding the content is another issue. For that, there are several graphical managers available – in case you don't feel comfortable with „plain shell commands“ executed via adb shell. For those, be welcome to check with the corresponding list on my own site. I personally use adbfs-rootless to mount the storage via ADB, so I can use any file manager for the job.

Also worth a look: our broken-screen tag-wiki

¹ though the same can be achieved on Windows, there you'd have to install a bunch of drivers to get it working
² for alternatives and additional details, please see our adb tag-wiki


How can I undo the "Do Not Ask Again" for bluetooth contacts?

Try putting the device in discovery mode before you sync it on your phone. I ran into the same issue and that is how I resolve it.


What can I do with DLNA on an android smartphone?

An Android phone with DLNA should be able to both send and receive.  My Galaxy S uses an app called AllShare to manage it, and there are others like 2Player in the Market. I'm sure you could stream to your stereo.


Check if you activate install from other than market, also check can you reinstall any of app. Also you may use other tools like King (Kingo) root.


When i try to capture a screenshot i get an "USB Storage may be in use" error. I can't install or use almost any app as well

After surfing the internet and trying more than a solution (i tried everything but the factory reset because I don't wanna do that) I discovered that this is a board problem. It's caused by many things. In my case, uninstalling Google Drive solved it. I got Link2SD and removed that app and that solved the problem. None of the tons of the solutions I read have mentioned that this problem may be caused because of some software need to be uninstalled. So, if you have the same problem and you reached this answer, try to play around your mobile phone and it will be solved. Because I and you have the same problem, but for different reasons.

If you are too lazy to do that, do a factory reset. It always helps.