The biggest spenders in the Federal Communications Commission's USD 19.8 billion auction were T-Mobile with $8 billion, satellite TV company Dish at USD 6.2 billion and Comcast with USD 1.7 billion.
The nation's airwaves regulator ran the auction to help wireless networks keep up as people spend more time on smartphones. The biggest bidders in the last auction, in 2015, were AT&T (USD 18.2 billion) and Verizon (USD 10.4 billion).
The company has racked up new subscribers in recent years and helped tug AT&T and Verizon into offering unlimited plans again.
Comcast, meanwhile, plans to launch a mobile service for its customers this year that will initially use Verizon's network.
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Dish has long been amassing airwaves and has said it will build a wireless network. Wall Street analysts suggest the end of the auction will lead to more merger discussions between telecom companies.
The auction, which started last year, will pay out USD 10 billion to 175 TV broadcasters that sold off their licenses. Those broadcasters go off the air or move to new channels.
Other stations will be affected, too, and roughly 1,000 will have to move channels over the next few years. Consumers may have to rescan their sets to get them.
About USD 7.3 billion of the money raised by the auction goes to offset the federal deficit.