Originally Posted by Perseus71
I'd try the Kies to Factory Restore. You've got not much to loose that way. Keep an eye on it afterwards to see if the reboots go away.
But before you do that, can you let me know if wife's phone has its own battery or your phone's battery ? If its was your Battery that was in there when she experienced the reboots then put her own battery and check.
Soooo on Sunday her phone completely shut off again. It would only boot to the swirling galaxy S circle, the turn itself off (in mid animation). I can boot it into recovery and download mode, but it only stays booted for 3 seconds or so, before turning off. Not long enough for Kies/Odin/factory restore via recovery.
SO we fixed the problem permanently. I got an HTC One and she got a Nexus 5.
Samsung can die in a fire. Never again are they getting my money.