I have a 100% normal Samsung Galaxy A3 2015 (SM-A300FU) with Android 5.0.2. It is non rooted. I notice that every time I use an app using sound (this might be an effect, but not the cause):

* WhatsApp phone call
* Music Folder Player Full
* a webradio app (that plays radio continuously)

the app crashes after ~ 15 minutes. It happens with no dialog box, it returns to desktop screen.

**What could cause such a bug? How to solve this?**