I've been pretty happy with my upgraded original iPhone, but to use it as my primary device I have had to forward my T-Mobile number to my AT&T iPhone. After just one week, I was pleased to see those excellent developers at the iPhone Dev Team post news that the iPhone 2.0 jailbreak and unlock tool has been posted and named Pwnage Tool. My original iPhone is now SIM-unlocked and running on T-Mobile and AT&T. ...