T-Mobile Fiber Internet Coverage and Availability

According to my chat with an online T-Mobile rep, there is no current coverage map for T-Mobile Fiber internet. The Federal Communications Commission also doesn’t have any mapping data for T-Mobile Fiber, since it’s such a new service with a small footprint. However, you can check its availability in your area.

Below you can see a map for T-Mobile 5G Home Internet, which is much more widely available nationwide compared to T-Mobile Fiber.

T-Mobile is best known for its mobile and 5G Home Internet services, but it’s been rolling out a very new fiber internet service. While we crowned Google Fiber as the king of fiber internet options, T-Mobile Fiber also offers a respectable service. T-Mobile Fiber offers three plans for up to 2,000Mbps speeds. A T-Mobile source told The Mobile Report that it would like to be known as “an ISP that also happens to have cell service.”

T-Mobile Fiber is currently available in eight states:

• California
• Colorado
• Florida
• Illinois
• Michigan
• Minnesota
• New York
• Wisconsin

T-Mobile announced its fiber service in 2021, rolling out plans in parts of Manhattan, New York. It told users to expect symmetrical speeds of 940Mbps, with average speeds coming in as low as 775Mbps (with a Wi-Fi 6 router included). Even in its early rollout, T-Mobile’s didn’t lay down its own fiber lines. It rented them from a competitor—a foreshadow of its continued fiber strategy in years to come.

T-Mobile lists these specific cities on its website, but availability may still be very limited:

T-Mobile plans to provide fiber to 12 million (up to 15 million homes) in the United States by 2030. Its unique fiber strategy involves partnering with current fiber companies rather than building its own. “We’re on track for that,” confirmed John Freier, president of T-Mobile’s consumer group, at Deutsche Bank’s annual Internet and Telecom Conference Call.

To grow its fiber reach, T-Mobile is partnering with open access fiber companies like Tillman FiberCo, SiFi Networks, and Intrepid Networks. In April 2024, it acquired Lumos Networks, a fiber service provider to around 320,000 homes and businesses across North Carolina, Virginia, and South Carolina. According to T-Mobile’s newsroom, this new investment sets up the plan for  fiber to reach 3.5 million homes by the end of 2028.

Though it remains tight-lipped about where it plans to expand fiber next, its website shares that it’s planning to build out more fiber in California, Florida, and Minnesota.

T-Mobile acknowledges that its fiber rollout is crucial in the growth of its 5G services. In part, this is due to T-Mobile’s limited capacity to deliver 5G home internet, which has resulted in a waitlist of about one million customers. By providing fiber, it hopes existing 5G subscribers upgrade, reducing the pressure on its 5G waitlist. T-Mobile's 5G network is currently available to 50 million people across the United States and two million square miles more than AT&T and Verizon combined in overall 5G service.

With two big acquisitions of private equity companies under its belt, some industry experts speculate about T-Mobile’s new potential future partners:

• Quantum Fiber: Fiber provider in Seattle and Bellevue, Washington.
• Ziply: Fiber provider in the Pacific Northwest, owned by WaveDivision Capital.
• Zayo: EQT-owned fiber provider.
• Astound: Cable provider in California, Washington, Texas, and Chicago.

With speeds that go up to 2,000Mbps, T-Mobile Fiber offers three packages on a Wi-Fi 6 router with unlimited data and no annual contracts. Notably, it describes its Fiber 1 GIG plan as having “blistering speeds.”

T-Mobile is known for its bundle discounts and unique options for military and veterans. I spoke to a T-Mobile rep, and she confirmed that T-Mobile Fiber customers can save $15 per month on 500Mbps or higher with a T-Mobile voice line.

As of January 20, 2025, T-Mobile is ending its Price Lock guarantee (a promise to not raise prices for Fiber customers). Moving forward, if you sign up for T-Mobile Fiber, you don’t get this Price Lock offer. However, it remains available to 5G home internet customers.

How do other fiber providers stack up? There’s Verizon Fios, which gets excellent ratings in our honest deep-dive review. Its 300 plan at $50 per month (with AutoPay) is fast enough for streaming, gaming, and video calls in a house of six people.

Though Google Fiber is the king of fiber, it comes with limited availability. Our #2 for the best fiber providers is AT&T Fiber. It offers plans with 300–5,000Mbps symmetrical speeds for $55 to $245 per month. It’s widely available, and its customers tend to rave about it.

It’s also worth exploring Verizon 5G home internet. For 300–1,000Mbps download speeds, customers also love it, saying they rarely experience internet outages.