I just tried to do an Upgrade Swap over the phone with AT&T and tried to remove the iPhone data plan from the line I just bought a subsidized 3gs with. The rep told me I cannot remove the iPhone data plan within the first 30 days or else they will charge me full price for the iPhone 3GS. This doesn't sound right at all since I've heard of numerous people on these boards being able to do this upgrade swap.
Do I have to do this kind of upgrade swap at a AT&T corp store and not by phone?
Do I have to do this kind of upgrade swap at a AT&T corp store and not by phone?