US carrier Google Fi is now using T-Mobile’s 5G network

Samsung Galaxy S20 Ultra (Image credit: Samsung)

In February last year, Google expanded its MVNO partnership with Sprint to include 5G. Now, it’s come to light that Google Fi, an American phone carrier from Google, which promises ‘simpler pricing and smarter coverage’, is already leveraging T-Mobile's 5G network on 5G phones like the new Samsung Galaxy S20 Ultra.

Andrew Martonik, Executive Editor of Andriod Central, yesterday tweeted photos of a Samsung Galaxy S20 Ultra on Google Fi, taking advantage of T-Mobile’s 5G network, in New York City.

5G speed tests

(Image credit: Andrew Martonik / Twitter)

The cellular indicator in the status bar on the 5G phone showed 5G speed tests with download speeds of over 135Mbps and uploads of around 42Mbps.

Thanks to Martonik’s tweet we can also see the “Mobile networks” page in the Samsung Galaxy S20 Ultra’s system settings also allows the “5G/LTE/3G/2G (auto connect)” option to be selected.

(Image credit: Andrew Martonik / Twitter)

Millimeter wave usage in NYC

A further tweet from an upbeat Martonik, who was happy to see the solid speeds, said: “Diagnostic screen on the phone says I was on band n261, which if correct would mean I’m on mmWave.” 

This comes at a time when T-Mobile in the US has said millimeter wave is available in “pockets of select cities” and Google having yet to detail a specific 5G arrangement.

Last year, Sprint, who is being taken over by T-Mobile, confirmed “5G compatible Designed for Fi phones in a 5G coverage area will be automatically connected to the network,” and this user experience certainly points towards this being a reality.

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(Image credit: Future)
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