My iPhone 4 has been suffering over the past week from a lack of vibration. I've tried everything to restore it, but have come to the conclusion that it is indeed a hardware issue. I will have to take it to my local Apple Store sometime this week. However, the phone is out of warranty. if I take it to an Apple Store, will I have to pay for the repairs? Also, will they repair my unit or replace it? Any insight is much appreciated. Thanks!