It seems like roughly once a week now that AT&T executives inform everyone that there needs to be a change in wireless broadband pricing -- and by change they really mean you'll soon be paying more money for wireless data. Carrier executives and investors want all users paying more for data as smartphones and open networks erode VoIP and voice minute revenues, though the carrier likes to pretend the changes are necessary because current (very profitable) pricing isn't sustainable. Speaking on the company's earnings conference call yesterday, CFO Richard Lidner again hinted at the looming change:Again, while AT&T continues to hint at the fact they'd like some kind of pure per-byte billing model (which many people would be fine with), what carriers actually wind up implementing are pricing models where all users are funneled toward higher prices. If AT&T introduced pricing that really was based on usage -- the vast majority of their subscribers would wind up with lower bills, which of course they don't want. At this point we wish AT&T would stop talking about it and introduce their dream pricing model so we can see exactly what the hell they keep hinting at (and prepare to take out that second mortgage if necessary).