Any one knows a definitive answer to the following? What is the difference in device and unlock status between buying an ATT iPhone from Apple for delivery at full price no commitment and buying one reserved at an Apple store on 9/25? According the iPhone upgrade program website it states among other things that the device is: • Unlocked — choose your carrier Apple tells me that at the point of buying in the store, you must choose a carrier and ACTIVATE it with that carrier, and then the phone is attached (locked?) to that carrier. What if I want to change carriers in month 2 or 3? Or use internationally? They have no clue as of now. Also - what if I want to own my device. Can't I just pay Apple the full price rather than installments?