Apple do not do this. I am already seriously frustrated with the terrible 3G (& even spotty EDGE) signal from AT&T. So many dropped calls...it's worse than cell service I had 10 years ago. Now this. Keep on pushing us to look at the Pre...especially when Verizon gets it in December!
Thats why I unlocked my iPhone so I didnt have to deal with AT&T shitty ass service. Ive had TMobile for 2 and half years now and very rarely ever dropped a call or had no service. Perfect example of why Apple should go with Verizon and TMobile US for the next iPhone but that wont fucken happen cause they dont want to make money I guess.