Eschewing the femtocells that most of its competitors have embraced, T-Mobile USA has long touted WiFi calling as the answer for augmenting its cellular network -- problem is, they've generally done a poor job of rolling it out to a wide variety of handsets. Notably absent from the compatibility list so far, Android is finally being welcomed to the club today -- as rumored -- with the recently-announced myTouch and Motorola Defy among
