T-Mobile has officially fired up 5G on its nationwide 600 MHz band. The carrier first acquired this spectrum a few years ago from the FCC for a very large sum. OTA TV stations in the US once used these ranges of frequencies. The new network covers 200 million people at launch in over 5,000 cities around the US and covers more than 1 million square miles including more rural parts. In a cheeky sci-fi themed promo video, featuring T-Mobile's President of Technology, Neville Ray, a pair of T-Mobile executives (including a hologram of T-Mobile CEO John Legere) mash a bunch of panels to prepare...