Okay, here is my dilemma. I am currently on a FamilyPlan with my dad and step mom. My contract is about to end in July (I think, created the line when the 3G came out), and their plans dont end until next summer sometime. I would like to upgrade to the iPhone 4, but my dad doesnt want to be with AT&T any longer, and instead is moving to Verizon. If my dad was to add me as an authorized user on the account, could I then sign the new 2-year contract using my SSN and information? And if this could be done, would it require me to pay the $500 down payment since I have no credit? Thanks for the help!