so i have restored my iphone several times, everytime after a phone call or anything it freezes with the top status bar disappearing, then i have to restart the phone and then everything works. WHAT IS GOING ON HERE? i have been having this phone freeze on me to, and i can't think of any other reasons to why it would be doing this!! the phone hasn't been dropped, i am using mobileme and exchange but still, shouldn't be freezing on me. non jb phone to!! any help?