New report shows T-Mobile still the most reliable 5G network in the US

(Image credit: T-Mobile)

T-Mobile 5G proves it continues to be the most reliable in the US, thanks to test results by umlaut, the global consultancy company and world leader in mobile network testing and benchmarking.

The company analysed the three US mobile 5G networks of T-Mobile, Verizon and AT&T with regards to mobile network performance and yielded results showing T-Mobile in the lead achieving the highest umlaut 5G Score with overall 707 points out of a maximum of 1000. Verizon scores second overall with 632 points and AT&T third with 599 points. In 5G Reliability, T-Mobile achieves the highest score with 664 out of a maximum of 800 points, Verizon ranks second with 560 points, AT&T ranks third with of 520 points.


(Image credit: umlaut)

The testing was done over a period of 24 weeks, from January 25th to July 11th 2021. umlaut used more than 1,300 data collecting applications, 70,655 5G capable users and collected over 43.386 million samples. 

“T-Mobile shows a high quality network.”

Hakan Ekmen, umlaut.

“Congratulations to T-Mobile for providing the most reliable 5G network in the US. T-Mobile shows a high quality network and also high reliability in all aspects relevant for the 5G user experience," said Hakan Ekmen, CEO of umlaut Telecommunication.


(Image credit: umlaut)

5G network performance across the US

In the Audit Report, umlaut also analysed the mobile networks in the US with regards to 5G mobile network performance. They took a closer look at ten US markets: Newark – Jersey City; Charlotte, NC; Austin, TX; Houston, TX; Chicago; Dallas – Fort Worth; Philadelphia; Washington D.C and Minneapolis; New York City, to see how the operators are performing in these lively centres of business, politics and culture.

Using Samsung Galaxy S21 Ultra 5G phones, umlaut tested and measured the downlink and uplink performance of data services to improve the user experience. Again, T-Mobile showed faster overall download speeds, on average at least 2.2 times higher than the competition. 

5G availabilities above 88% in all tested cities

Umlaut found that T-Mobile shows very high 5G availabilities above 88% in all measured cities, leading in Newark, Jersey City, Charlotte, Austin, Houston, Chicago, Dallas – Fort Worth and Minneapolis. In 7 markets the 5G availability exceeds 95%. The Audit Report also showed that T-Mobile‘s 5G ‘Ultra Capacity’ download speed exceeds 257 Mbps in average, and goes up to 318 Mbps per market and importantly, T-Mobile shows clearly faster average download and upload 5G speed in all measured cities than the other operators.

"Transformative experience to customers across the country"

Neville Ray, T-Mobile

“umlaut’s report is just the latest to prove customers and businesses alike can count on T-Mobile 5G to deliver a fast and reliable 5G connection in more places than anyone else,” said Neville Ray, President of Technology at T-Mobile. “While the other networks play catch up, we’ll keep adding more 5G coverage and capacity to bring a transformative experience to customers across the country,” Ray continued. 

Rachael Sharpe

Rachael is a British journalist with 17 years experience in the publishing industry. Since launching, she’s been freelancing, and working for some of the world’s best-loved websites and magazines including and and has also had a book, iPad for Photographers, published. A regular contributor at 5Gradar, Rachael is following the 5G market closely. Find out more at