T-Mobile has its share of issues, but there’s no denying it has some of the best data coverage in the country — and its about to get much better. The company is getting ready to boost its maximum theoretical internet speeds top become the faster carrier in the US by a wide margin. The network will soon supports theoretical speeds up to 400 mbps – nearly half the speed of Google Fiber. There’s a two-pronged approach to the upgrade. First is incorporating 4×4 MIMO (multiple input, multiple output) technology, which will supposedly double the speeed from the current 7-40 Mbps customers…

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