The evidence has been mounting for some time, and people are starting to notice. TechCrunch recently posted about the problems with AT&T, and the article is also a good collection of references:
Since I switched to AT&T from Verizon just over 2 years ago to get the iPhone (which, of course, AT&T has exclusively in the U.S.), there have been no shortage of shortcomings by AT&T. But as of late, I’ve been noticing things getting much, much worse. And I’m hardly the only one. And so it’s time to call out AT&T on those failures. And plead with Apple not to renew its exclusive contract with AT&T when it expires next year.