I hung up a little while ago talking with a TMO customer service person. I'm about to buy my son a phone and I mentioned that I might just port his number over to ATT to get him an iPhone. The guys said, "Apple signed a one year exclusiviity with ATT. This summer, TMO will have the iPhone as well. If you can just wait a few more months..." This might be BS, old news or just interesting. I really like Tmobile. I'd rather not leave as I really detest ATT.