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 2025, T-Mobile announced its acquisition of 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.

With EQT’s digital infrastructure, Lumos’ fiber deployment, and T-Mobile’s national reach, T-Mobile’s fiber network is going to expand even further. Starting June 5, T-Mobile Fiber will be available to new and current T-Mobile customers across 500,000 households.

You can visit T-Mobile's site to sign up for its newest fiber plans.

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.

How do other fiber providers stack up? There’s Verizon Fios, which gets excellent ratings in our honest deep-dive review. Its 300Mbps plan is a little more expensive at $50 per month (with AutoPay), but it gets solid customer feedback that it's fast enough for streaming, gaming, and video calls.

Another alternative to T-Mobile Fiber is AT&T Fiber–one of our top-rated fiber providers. It offers plans with 300–5,000Mbps symmetrical speeds for $55 to $155 per month. It’s widely available, and its customers tend to rave about it in our review.

It's also worth exploring cable providers, which have widespread availability and upgraded their download speeds to be on par with fiber providers (although, cable providers do have slower upload speeds are slower and less reliable connections). Xfinity gets fast speeds and top promotional deals, including a 5-Year Price Guarantee. Spectrum is also a great option for cable, and offers price-locks when bundled with TV.