Hi guys. I've had the 6120 classic for about 4 months now and all was going well till today when i try to manually press a number on the keypad from the home screen the phone restarts itself as soon as I press the first number. It will only let me call from the recently dialed nuumbers. I tried taking out the battery and sim card for a few minutes and it is still the same. Somebody please help!!! Up until now, I liked the phone and had no problems

-thanks