It’s been a little more than three years since AT&T dumped T-Mobile at the altar when it became clear that the FCC and Justice Dept. wouldn’t sign off on the marriage. And while the little magenta wireless company has done okay for itself since — building out a decent LTE network, shaking up the subsidized device/contract model, and helping to preserve what little competition remains in the market — its parent company still wants to see T-Mobile USA married off to a wealthy American suitor. [More]