Same problem 2 different iphones.
Same problem in my car with Bluetooth.
Same problem with different Bluetooth headphones.
Same problem using the phones speaker - no bluetooth anything...
Same problem with ibook app and auable app.
Restarting does nothing!
Hundreds of restarts... power offs and restarts
The one and only thing that works for any real length of time is;
- start playing audio
- press the iphone power button to place in screen saver/power saver mode
- press the power button again to bring up the 'mini' audio screen (with time / date and day)
- keep it live (don't let it close) once it crashes - the mini screen will change to 'audio' as opposed to the audio title (song/book). press <play> repeatedly until it restarts. It will now play for some time - normally at least a 30 min.