I'm an AT&T customer. When the first iPhone came out, I unlocked it and switched it to T-Mobile. Eventually I grew tired of unlocking and jailbreaking with every update and became an AT&T customer. Since I've been a customer, I've experienced dropped calls, spotty data services and extortionate fees when travelling abroad. I can hardly conceive that less competition among GSM providers will make that better.<p>Where do I sign up to block the deal?