Q: Using "pre-defined" iOS push notification sound I would like the play the common iOS push notification sound when the client receives a push message. In another project I used a custom sound what I added to the dictionary like this:
    NSString *sound = [NSString stringWithFormat:@"boing.aif"];
    NSDictionary *pushMsg = @{ @"aps" : @{ @"alert" : content, @"sound" : sound } };  

And I called a method in didReceiveRemoteNotification: what played the sound. It works well, but I have no idea how could I do it with system sounds. Do I need to call something in  didReceiveRemoteNotification: or add a specific value to the sound key in the dictionary?

A: You need to set default for sound key in payload
"sound" : "default" 

