Ok, so far so good. 2nd phone 2nd day & no problems. I am almost afraid to play with it though or add anything. To the poster that said it could be related to the battery, I don't thin so. Had it happen with full, low and plugged in. Also, not cell phone tower problem I have one a block a way & not moving when it happened one time. I really like my Moment once I have one that works. It is a good phone.