Hi all. I'm new here so forgive me if these questions have been touched on. I'm trying to decipher what I should do.. I am not signed to anyone's contract and I've been thinking about doing a few things because I want a touch screen phone. Here goes.. -Can I use prepaid on att with the iphone 4? -If I signed with the company with a contract, can I use just buy a data plan? I was considering buying an unlocked iphone 4 and using prepaid on tmobile. Is this possible? What do you think I'd get for selling the iphone 4 once the new one comes out in June? The option is to get the contract with them, and sell it (ONLY if Verizon gets theres in June as well.) I'd stay with Att until Verizon comes through. Thanks in Advance.