My little brother wants an iphone. But my parents dont want him have the internet access so they called for my help. 1. Can they buy a brand new phone (iphone 4) from At&t and not have the data plan? 2. If I buy a second hand iphone 3GS, would they need to add a data plan? Would at&t force them to add a data plan? FYI, Parents use AT&T.