A recent survey of Consumer Reports readers found AT&T to be the "worst" mobile carrier in the United States. Incidentally, AT&T is also the exclusive U.S. carrier for the Apple iPhone--for now.
Amid rumors that the iPhone may be coming to Verizon's network, AT&T's CFO recently commented on exclusivity in what may be a hint that AT&T could be losing its grip on the iPhone.
Linder also said that AT&T has eye for other phones besides the iPhone.
These statements seem to validate persistent rumors that AT&T's exclusivity deal with Apple is winding down. Apple is believed to be considering Verizon, among other carriers, to join or replace AT&T at year's end.