Eli Blumenthal, USA TODAYPublished 9:00 a.m. ET Dec. 18, 2018 The mobile 5G race is officially at the starting block. On Friday, Dec. 21, AT&T will turn on its mobile 5G network for the public in 12 cities around the country. The first batch: Atlanta, Charlotte, Raleigh, Dallas, Houston, Indianapolis, Jacksonville, Louisville, Oklahoma City, New Orleans, San Antonio and […]