T-Mobile Bids $8 Billion At FCC Airwaves Auction: Un-Carrier Now In Position To Topple AT&T, Verizon T-Mobile bid nearly $8 billion at the recently concluded auction for broadcast airwaves spectrum by the FCC. The wireless licenses that the Un-Carrier acquired would allow it to further challenge, and possibly outmuscle, AT&T and Verizon. by Aaron Mamiit