A pedestrian uses her smart phone as she passes a T-Mobile retail store in Manhattan, New York, U.S., September 22, 2017. REUTERS/Darren Ornitz

BARCELONA (Reuters) - T-Mobile US, the third-largest U.S. mobile operator, will roll out its fifth-generation network across the United States by 2020, Chief Technology Officer Neville Ray said on Thursday.

“We are committed to roll out 5G across the nation by 2020,” Ray said at the Morgan Stanley European Technology, Media and Telecoms Conference in Barcelona.