Total Surveillance: The Future Of 5G-Powered Smart Cities
T-Mobile's Chief Technology Officer Neville Ray unveils plans to build a nationwide 5G network in the U.S. during Mobile World Congress on Tuesday, Feb. 27, 2018 in Barcelona, Spain. The Un-carrier plans to build 5G in 30 cities this year. (Manu Fernandez/AP Images for T-Mobile)
