The fastest cellular service in the United States was provided by T-Mobile. The company behind the popular Speedtest bandwidth measurement service is called Ookla, and it regularly releases reports on the speeds of the internet.

The median download speed for T-Mobile was more than double that of the second-place company, while the third-place company had a median download speed of 56.10Mb/s. Since the fourth quarter of 2021, the median T-Mobile connection speed has increased to 90.65Mb/s.

T-Mobile had the fastest median download speed at 191.12Mb/s, followed by Verizon at 107.25Mb/s and AT&T at 68.43Mb/s.

T-Mobile has the largest 5G network of the three carriers because it has used 600MHz low-band spectrum. AT&T and Verizon have limited 5G coverage at the moment, but it can hit higher speeds in urban areas.

AT&T came in at 34 ms and T-Mobile came in at 31 ms. T-Mobile had the highest proportion of results showing at least 5Mb/s download and 1Mb/s upload speeds. AT&T was third at 82.1 percent.

Minnesota, the District of Columbia, Rhode Island, Illinois, and New Jersey had some of the fastest median download and upload speeds in the United States during the quarter.

There is more information on the website about the speeds of the internet in the United States.