Got a Vitality for my wife from one of the best buy sales. Rooted it, stock rom. Got it activated on PagePlus, not cricket. Voice/text only, she's only going to have wifi data. Anyway, I'm trying to get it all configured for her as her first smartphone. It's sitting here on my desk while I do other things, and it keeps rebooting. Every hour or so I hear it make a noise and look over to see it booting up. Any idea what would cause that?