I am fed up with AT&T's absolutely terrible BlackBerry service. Last night marked the 3rd time in less than a week that I've had to help my mom with a problem relating to email, so I'm forcing her to upgrade to a device that doesn't require a middleman. My old 2G iPhone would be perfect for her, considering the free cost (I'm a nice child, what can I say?), but I need to know if it is possible to switch it over to the iPhone plan on AT&T's website without any upgrade costs or additional contracts. The iPhone is meant more to tide her over for another year or so, but I don't want to lock her into another contract and we don't want to pay any fees for changing. She is long overdue for an upgrade (her current phone is 3 years old) so we don't have to worry about breaking any contracts (we are also in a family plan). I hope to just be able to pop in the sim card from her BlackBerry and do the swap on AT&T's website, but I wanted to hear from people who have done this before.