From what I've been told, you don't have to have a prepaid att phone, you can use any att phone. I bought a prepaid one because of another reason, not related to the hobby, and it sucks at texting. When I asked which phone I can upgrade to, they said any att or unlocked gsm phone, except for Blackberry or iPhone.
Originally Posted by davester
That matches my experience. It might actually work on iPhone, as long as you know how to open the secret SIM compartment.
Of course, AT&T may decide to fuck this up in the future at any time, or you may just have a glitch on some phone combinations. Did I mention that all cell phone companies are scumbags who suck diseased donkey dicks?