Regional network MetroPCS has announced total revenues of approximately $1.3 billion for Q1 2012, up from $1.2 bilion in the last quarter and up seven percent from the same period in 2011. Users on contract now total 9.5 million, with 16 percent of them making the move across to a smartphone. Net income has, however, dropped 63 percent since Q1 2011, with cost per user up 16 percent compared the same period last year. MetroPCS puts down to "retention expense" and the roll-out of its 4G network. The fifth biggest US carrier added over 131,000 new subscribers, but growth continues to