Hi, I'm currently on a 2 yr contract with AT&T and have recently bought a refurbished 4GB iPhone from Apple. I've tried searching many times, but haven't found an answer to this question: Is it possible to unlock my iPhone and then use it with the official iphone data plans (ie activating using the official way?) The reason I want to do this is because I travel abroad several times during the year and would like to use the iPhone's phone function, while keeping the unlimited data plan when I'm in the US. Any help would be very much appreciated. Thanks!