https://www.cnet.com/news/verizon-dethrones-t-mobile-in-latest-ranking-of-mobile-coverage-video-streaming/

Verizon won outright in 4G coverage, video streaming quality and upload speeds. T-Mobile and Verizon tied in download speeds. And AT&T won in the fifth category: latency, which measures network response time.

Verizon can't rest on its laurels, though. "In every metric Verizon won, T-Mobile is a very close second in our analysis," OpenSignal said.