My parents want me to pay for the iPhone myself. Is it possible that I can sign the contract under my name but being underage for 6 more months, have my parent cosign with me? It would be understood that it would be fully in my name when I am of age. Or can I be on the account as an authorized user. Ultimately, I want to do all the AT&T account stuff before I get the iPhone so I can go in on my own and just buy it.