I live out by the Mills Malls...and the tower does the same thing. Its weird tho, it doesn't always register touch tones, sometimes its super fast, other times it switches to 3g. I can't explain it...but I do know that 3G as a whole is way faster than its ever been. I map it on Sensorly whenever I can. Whatever tower hits Monroeville tho...its amazing!! I've not seen 4g tower like that. Reading all these forums....We have 4g in Greentree, New Castle, parts of Butler, Cranberry, Greensburg, Monroeville, part of New Ken...shouldn't be long now. I also got the message about a network upgrade coming soon.
