It was one year ago that T-Mobile USA began to transition its mobile phone network to LTE. Now the company has announced a major network transition as it continues that effort by upgrading its older, slower 2G/EDGE network with 4G LTE coverage as well. T-Mobile expects to be 50 percent complete with that transition by the end of 2014, with the the program expected to be "substantially complete" by the middle of next year.
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