Unrooted, locked RAZR Maxx HD. The only thing not entirely typical about my phone is that I'm in Germany at present, running it on a no -Verizon SIM. Since I updated, I seem to be getting restarts every day or two. Screen blacks out and the phone is unresponsive for a minute or two, then it fires up again. Doesn't quite act like a complete reboot, since I don't get the "Unlock PIN" screen that I do when I boot. But I get the message that the PIN is from an unknown source, and then it works fine. At first I thought that maybe the trouble was from Greenify, which I installed shortly after the update, but uninstalling it didn't help. Any thoughts?