Currently, I am on an AT&T Family Plan with my 3GS. There's three people and we use the 500 minute plan, so it's about 110 or so per month. I am using the $30 unlimited data plan at the moment. I have some questions, but first let me tell you the "ideal" situation I want to be in. My friend, who currently has some Sony Ericsson phone, recently bought an iPhone 3G. He did not have a data plan with his Sony Ericsson, and since his data plan was blocked, he had nothing to worry about with his 3G and "surprise" data charges. However, after about a week with his 3G, he decided he wanted to use Data on the go, and instead of buying the $30 unlimited data plan, he bought a $9.99 unlimited data plan additionally to his family plan for his Sony Ericsson phone. Right now, I believe that AT&T is unaware of the fact that he has an iPhone, and is giving him unlimited data for $9.99 because they think he has the Sony Ericsson. (He had to change APN settings but it works perfectly with the iPhone 3G). 1. If I call AT&T, could I remove the $30 data plan from my bill? (Yes I obviously understand that I wouldn't have internet on the go w/o WiFi but I want to know if this option is available.) 2. Could I somehow get that $9.99 data plan for my iPhone 3GS? If so, how? -- The reason I ask is because I think that I would have to somehow tell AT&T I don't have the 3GS anymore, or else they would no way give me the $9.99 plan. So would I have to report I don't have a 3GS and that I am now using a dumbphone (not smartphone that uses data)? If this is the way to go, would I have to pay some cancellation fee on the iPhone? (Note I wouldn't be cancelling my contract, just the iPhone on my 3-way AT&T Family Plan). I'm very interested in how to save money (obviously), so please help me out if you can. Or, if you have a better way for me to use unlimited data on AT&T WHILE staying in my family plan without paying $30, let me know. Thanks a bunch! (Let me know if you don't understand my questions because I could clarify.) P.S. Is AT&T ever going to find out about what my friend is doing, because if not, then I am assuming I could somehow do this.