[JeffKay]

I have my phone bone stock with no rooting. Yes I have the OTA update.
Yesterday, I started getting the issue with the phone rebooting every time I started a GPS type app. The Icon lit up, and the phone rebooted 100% consistently. Different apps, all rebooted the phone 100% of the time.

I reformatted and blanked the phone – still rebooted
I turned off backround updates - still rebooted
I reformatted the DS card – still rebooted
I removed the SD card – still rebooted.
Then.. After total frustration, I took a spare battery I had, popped it in. ZERO REBOOTS!

The stock battery was causing the issue. I was able to reproduce it 100%. No error or other warnings. They battery was fully charged.

I cleaned the battery contacts and the issue went away. Totally bazaar, practically unbelievable, considering everything else ran perfect.

Anyway.. my 2 cents. Maybe this can help some people.