This my second device doing this rebooting thing. Maybe it cant handle my email volume? I get about 200-300 a day. I know. It can't be helped. Tomorrow is day 29. I'm giving serious thought to returning it. Today it rebooted just after I dialed 911. Luckily the guy i was with made the call. Its a great little toy with great features but it not worth someone getting hurt over. I'll buy it again when they get it right. Back to the 8830.