T-Mobile is introducing a 5 Gbps fiber internet tier priced at $90 per month, the company's fastest fiber offering to date, and it comes with a 10-year price guarantee. The plan joins T-Mobile's existing fiber lineup of 2 Gbps at $70 per month, 1 Gbps at $60 per month, and 300 Mbps at $45 per month. All of the plans include symmetrical upload and download speeds, which the company positions as an upgrade for customers moving off traditional cable internet.
The decade-long price lock is a notable feature in a market where legacy cable providers have often raised rates and required customers to work through various steps to hold onto their existing pricing. T-Mobile's guarantee does carry exclusions, however. Taxes and fees, voluntary equipment or speed upgrades, select limited-time promotions, per-use charges, third-party services, and network management practices fall outside the price commitment.
Customers must enroll in AutoPay with T-Mobile to qualify for the $90 monthly rate. The plan also includes a mesh Wi-Fi extender intended to expand coverage beyond the included Fiber gateway. New customers are eligible for two months of free service delivered through bill credits, along with a $300 virtual prepaid debit card.
T-Mobile's pricing undercuts some competing fiber options. GFiber, Google's fiber service, charges $100 per month for 3 Gbps and $150 per month for its 8 Gbps tier, making the T-Mobile 5 Gbps plan an aggressive entry in the U.S. home fiber market on a per-speed basis.
The fiber plan is separate from T-Mobile's unlimited 5G Home Internet service, which starts at $50 per month and remains an option for households outside the company's expanding U.S. fiber footprint. T-Mobile has been steadily growing that fiber presence across the country.
The launch expands the carrier's push into home broadband, where it competes with established cable and fiber providers. For consumers, the appeal of the new tier rests on the combination of higher symmetrical speeds, the multi-year price commitment, and the bundled equipment and new-customer incentives, subject to the stated conditions.
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