I haven't downloaded any apps that where by unknown creators, i've never rooted it or messed with any of the files. only had the phone 2 months and I reached into my pocket today pulled out the Phone and saw it was rebooting. It has randomly rebooted before so I thought no biggie. It then stayed in a loop rebooting, for 3 hours without ever getting past seeing Kyocera, Sprint, Echo pause reboot. pulled the battery waited put the battery back in turned it on, and it started the loop all over... help please? advice?