Whenever I hit the phone "button" at the bottom of the home screen, it doesn't take me to the phone screen itself; instead a little bubble comes up above it that says "phone." I can still call people by going to their contact info and receive incoming calls, etc. I just can't hit the phone button and have it take me to the home screen. I have tried reseting (both through the normal reset option and taking the battery out) and neither have worked. Any thoughts?