T-Mobile today announced its first-quarter 2012 earnings, adding 187,000 net subscribers in the first three months of the year, compared to a loss of 99,000 a year ago. Money-wise, TMoUS saw operating income rise $7.2 percent to $1.27 billion, and average revenue per user jump a couple bucks to $58. The big talk from T-Mobile this week at CTIA, however, is life after the failed AT&T acquisition. And to that end, it's continuing to upgrade its network with an announced $4 billion modernization plan that will pave the way for LTE service in 2013.

Total customers now stand at 33.4 million -- up a couple hundred thousand from the end of 2011, but still 200,000 below Q1 2011.

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