T-Mobile has been locked in a heated battle with ATT for years, but now that the once-struggling carrier finally has a foothold in the market, it might be time to take on No. 1. CNET reports that T-Mobile will be adding 4G LTE to its 2G network this year as it prepares to increase its coverage even further with the recently purchased wireless spectrum from Verizon. In an interesting twist, the wireless carrier has announced it will also be pursuing legal action against Verizon, which regularly bashes its competition in advertisements with colorful coverage maps of the United States. Unsurprisingly, Verizon’s reach trounces T-Mobile’s in these ads, but irascible T-Mobile CEO John Legere isn’t pleased with the representation. “Verizon’s ink