President Donald Trump says the race to build 5G is one America must win.
Trump said Friday at the White House that building high-speed networks across the United States will transform the way Americans work, learn, communicate and travel.
5G will mean faster wireless speeds and has implications for technologies like self-driving cars and augmented reality.
The rollout started last week in the US and South Korea but will take years.
Trump says, "We must not rest. The race is far from over."