Hey all, I purchased a black 16gb iphone 3G on launch day at an ATT store. The screen is defective. With the concurrent shortage and limited supplies of the iphone at ATT stores and as such, Apple stores, do I have to return the phone for an exchange at an ATT store? With supply and demand being an issue, the Apple Store would be my safest and most secured chance of actually exchanging one since ATT is only dealing with DF's at this point. Thanks in advance.