Lol. I'm not quoting anything that ATT claims, or has ever claimed. Again, you can Google search the subject if you'd like. The recent articles that pop up relating to best cell coverage in the Phoenix/valley area are from independent local tests, surveys, etc, etc, etc, done over the years...all from different third party sources. The correlation in essentially every article you find is that they all for the most part say both ATT and Verizon are the best in the valley, or ATT is the best in the valley. I don't see any articles saying Verizon, or go home. Maybe you can be the first to publish that opinion piece, though.
You'll also find that Verizon does in fact lease towers from ATT in the valley, as well. And, not the other way around. I call that, a clue...
I have a lot of local tech industry buddies, as well. To call some of them even just tech geeks wouldn't do them justice. Anyways, all of them have either stuck with or switched to ATT over the years because they "want the fastest network available" in their market. They say there isn't a debate in that regard. So, I dunno what to tell ya.
And, I love me some Verizon. I'm just making sure the right info is being spread. I'm even about to start looking into getting a Verizon pay as you go phone for when I'm up north. I hate my ATT coverage up there. Verizon is much better in rural AZ, I fully agree. I just happen to spend 99 percent of my time in the valley right now, unfortunately. And, just because even T-Mobile may be the best coverage for Billy Bob in Surprise, it doesn't mean that T-Mobile is the best overall provider. This is about generally speaking.