dkinpa

I have an HTC Tilt and at night when in the sleep mode (screen off) the clock does not keep accurate time. If I have the alarm set for 6 am it might not go off until the actual time is 7 or so but the phone thinks it is 6. If I take it out of sleep mode manually ti will show a time several minutes or even an hour behind the actual time and then quickly catchup. The same thing happens for reminders in the calender.
I have done several soft resets but it has not helped so maybe someone here can help!?!