I love my iPhone aside from this annoying little problem. Sometimes when I'm using it, no matter what I'm doing (texting, games, browsing), the iPhone screen becomes completely unresponsive. The home and lock button work, but the screen itself wont respond to touch. The only solution to it is to lock the phone and then unlock it, which is proving to get pretty tedious. It acts up like this at least 5x a day, more some days. Does anyone know if this is a hardware or software isue, and should I take it in to Apple? Any input is appreciated.