オリジナル投稿者： Sam Anticks ,
I know this answer is a little late to the party, but I have owned this device, and I experienced the same issues.. Change the battery door. Mine got loose over time, and caused the battery to barley come disconnected at times, and the phone would reboot constantly during the course of a day. I know it sounds simple, but simple can be brilliant too. Good luck with your s4, that's a really nice device.