My phone keeps randomly changing the day and time to usually sometime in December and typically sometime in the early morning. My phone is currently set to get the date and time automatically and from the network. When the date and time go out of whack, I have tried turning off "use network time" and turning that back on again, but that doesn't seem to help. The only thing that seems to help is to reboot the phone. This doesn't happen every day, but it happens frequently enough that it's super annoying - at least four times (probably more) in the last 3-4 weeks. Thoughts?