It's never easy to share news of job losses, but that's the state of things at T-Mobile's US headquarters in Bellevue, Wash. Today, the carrier confirmed to us that layoffs are currently underway, which comes in advance of the UnCarrier's merger with MetroPCS. While T-Mobile representatives withheld specifics, The Seattle Times reports that somewhere between 200 and 300 employees have been laid off, whose jobs range from administrative assistants to senior vice presidents