Good evening all, I'm all set to buy an iPhone 3GS tomorrow. I'm not upgrade eligible, but my mom (who is on my family plan) is. I sold my iPhone 3G today. I plan on buying the iPhone on her line and somehow switching the numbers. I am paying for a data plan right now for my 3G (which I just sold), and when I buy the 3GS I will be signed up for a second data plan. I'm asking for advice on how to seamlessly port the 3GS to my phone number and how to make it so that THAT data plan is the only one active. My original plan was call AT&T, tell them I sold the phone and I need to cancel the data plan. Then I would buy the iPhone from the Apple Store (AT&T sold out), go over to the AT&T store and tell them that I need the number switched to mine. Would this work? This is in no way "frauding" Apple or AT&T. They both told me this was common practice and fine with them.