I have an LG Enact and it will sporadically turn itself off and back on. I have done reboots, reset to factory settings and it stopped for a while, but now it's doing it again more often. I was trying to update some apps thru the play store and my phone just froze. Tried to reboot and now it's on a reboot cycle, it wont reboot but will shut off and reboot about every 15 seconds