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What's the Fastest Wireless Network in the US?

T-Mobile is giving Verizon and AT&T a run for its money in the speed department. AT&T Fiber is the fastest fixed ISP, but Google Fiber is often on top for state- and city-specific results.

January 23, 2025
An illustration visualizes data zipping along fiber-optic cables in front of a dark blue background (Credit: Yuichiro Chino / Getty Images)

A new study of ISP performance offers one result that should be useful to people across the US and one that’s only relevant in a subset of the country.

Ookla’s latest Speedtest Connectivity Report, released Thursday, draws on data from that firm’s Speedtest bandwidth-testing app to crown T-Mobile as the fastest mobile carrier in the US and AT&T Fiber as the fastest fixed broadband provider

The report offers an unambiguous thumbs-up to T-Mobile, giving it a “Speed Score” of 222.63 that about doubles Verizon’s 113.2 and AT&T’s 111.07. The median download speeds that fed into that metric: 212.77Mbps at T-Mobile, 95.08Mbps at AT&T, and 86.23Mbps at Verizon.

Fastest Mobile Network ookla
(Credit: Ookla)

T-Mobile’s advantage persists in 5G median network download speeds: T-Mobile at 281.52Mbps; Verizon 199.1Mbps; AT&T 140.09Mbps. T-Mobile’s early lead at putting fast mid-band 5G spectrum into service, which it markets as “Ultra Capacity” 5G, continues to pay off.   

But while T-Mo also leads Ookla’s 5G availability rankings at 89.4%, that metric shows a vast gap between AT&T (86.2%) and Verizon (49.3%) that doesn’t surface in other tables in this post. The key to interpreting those numbers: They count any 5G connection, not whether it was on speedier spectrum like T-Mobile’s mid-band and AT&T and Verizon’s C-band or on low-band 5G that may not be much faster than 4G.

Those are numbers wireless customers should consider carefully.

Fastest Fixed ISP
(Credit: Ookla)

But while most Americans have a choice of wireless carriers, the selection of wired residential providers on any block is much smaller. That makes Ookla’s nod to AT&T Fiber a non-factor to people outside of that company’s service footprint and even those inside the non-fiber parts of it where AT&T is instead rolling out fixed-wireless broadband.

That Dallas telecom firm holds an outsized lead in Speed Scores: 367.05, far above Verizon’s 277.41, Comcast Xfinity’s 251.32, Cox’s 250.01, and Spectrum’s 247.81. Ookla didn’t break out the math behind that metric, but it must weigh downloads heavily to give such a high ranking to cable ISPs with upload speeds that trail far behind what fiber delivers.

Ookla’s study also seems to repeat a questionable practice from a speedtest report last summer: only assessing AT&T’s fiber while lumping Verizon’s Fios in with that company’s slower 5G fixed wireless and legacy digital subscriber line service. 

On the other hand, median download speeds of 357.45Mbps at AT&T Fiber understate what that network can do, considering that AT&T started selling 2Gbps and 5Gbps service in 2022

A series of tables in Ookla’s report offer samples of state- and city-specific performance that reveal Google Fiber as a local favorite when it’s available. Google’s fiber broadband was the fastest option in Texas and North Carolina and in Charlotte, Durham, and Raleigh, NC; Austin, TX; and Irvine, CA. 

Ookla also gauged customer sentiment about these providers, and the results suggest customers will put up with a fair amount in return for a fast connection: T-Mobile had the highest mobile-consumer sentiment score, 3.7 out of 5, despite jacking up rates on many older phone plans with scant notice last year, and AT&T’s massive data breach last year did not leave a visible dent in its top-ranked wireless consumer sentiment score of 3.74.

Disclosure: Ookla is owned by Ziff Davis, PCMag’s parent company.

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About Rob Pegoraro

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Rob Pegoraro writes about interesting problems and possibilities in computers, gadgets, apps, services, telecom, and other things that beep or blink. He’s covered such developments as the evolution of the cell phone from 1G to 5G, the fall and rise of Apple, Google’s growth from obscure Yahoo rival to verb status, and the transformation of social media from CompuServe forums to Facebook’s billions of users. Pegoraro has met most of the founders of the internet and once received a single-word email reply from Steve Jobs.

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