Originally Posted by ThatKawaiiGuy
This started happening 3 days ago. When I use my phone continuously and then put it to sleep and don't use it for like 30 minutes it turns off ( the battery is not dead) it has happened twice already. My phone randomly turns off and when I hold the power button for minutes it doesn't turn back on. It just some how turns back on itself. This phone has no removable battery.
are you sure it's not an app locking your phone? Juicedefender + "smart" wifi location?
Tried resetting your phone?