mine has done this also. I am really starting to dislike this phone also missing text messages, people cant view mms cause they are to small. amongst other issues
Mine did it on .65 and .75. It does it twice a day. On the way to work, and on the way home, around the same area. I'm thinking it's a signal issue bug... (because the area it restarts in doesn't have the best signal strength). It doesn't restart any other time, that I've noticed...