AT&T was the largest winning bidder of licenses in Mexico's auction of 2500-2690 MHz spectrum. In total, AT&T will pay MX$1,400,101,288 (US$75.881 million) in both FDD and TDD for the 20-year license. Telefónica will pay roughly half as much.
With this auction now complete, Mexico's major spectrum holders are as follows
http://www.ift.org.mx/