Did the recent update.Several apps would randomly stop working and close. Then out of the blue the phone shuts off. I turn it on and it gets to the LG screen and verizon screen then reboots. I swapped the battery for the spare that is hardly used. Pulled out my sim card and memory card. Sometimes it will reboot other times it does say android is starting.... Optimizing app 1 of 277 apps then moves onto 77 apps. But then reboots.