My droid 2 has been acting up lately. After it's been on for a few hours and I either make a call or try to receive a call there is no sound and ther caller can't hear me either. Once I reboot the phone and call the person back it is fine. This is very frustrating and I would just get a new phone but can't afford one right now, nor do I want my plan to change. Anyone have any suggestions on how to fix this??