T-Mobile (NASDAQ:TMUS) often pegs itself as the nation's scrappy un-carrier, but as the company's network and customer base have grown it's starting to become a bit less believable as a true underdog. Especially with a new speed test recently released by Ookla that shows T-Mobile beats all the nation's carriers in average LTE speeds -- despite being the nation's third-largest carrier.

Click through the slideshow below to find out how much faster T-Mobile's speeds are compared to the second-place contender, and how T-Mobile is using its fast LTE speeds to its advantage. 



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