T-Mobile 5G Home Internet vs. Xfinity

Price: which costs less?

T-Mobile lists three 5G Home Internet plans, with autopay:

• Rely: $50 a month, or $35 with a T-Mobile voice line
• Amplified: $60 a month, or $45 with a voice line
• All-In: $70 a month, or $55 with a voice line, adding a mesh unit, security software, tech support, Hulu and Paramount+ Essential

All three include the 5G gateway with no monthly equipment fee, unlimited data and a 5-year price guarantee. A $35 device connection charge is due at sale, and taxes and fees are extra.

Xfinity’s national plans, as listed by plan trackers in October 2026, cost about $45 for 300 Mbps, $60 for 500 Mbps, $70 for 1 Gig and $100 for 2 Gig a month with autopay and paperless billing, also with a 5-year price option, the WiFi gateway and unlimited data included.

If you already pay for a T-Mobile phone line, T-Mobile is cheaper at every tier. If you don’t, prices are similar, and Xfinity gives you more speed for the money.

Speed and consistency

This is where the two differ most. T-Mobile publishes typical speeds: Amplified and All-In customers see downloads of 170 to 498 Mbps and uploads of 12 to 55 Mbps, and Rely customers see 170 to 354 Mbps down. A quarter of customers get less than those ranges. Speeds depend on your distance from the tower, walls, time of day and how busy the network is.

T-Mobile also prioritizes phone traffic. Its plan page says that during congestion, home internet customers may see slower speeds than other customers, with further slowdowns above 1.2 TB of use a month.

Xfinity’s cable network sells plans from 300 Mbps up to 2 Gbps, and wired speeds on cable are generally steadier than a wireless signal. Cable uploads are still much slower than downloads, so if uploads matter most, look for fiber.

For one or two people streaming and on video calls, T-Mobile’s typical speeds are plenty. For a household with several 4K streams, online gaming and big uploads, Xfinity is the safer bet.

Setup, contracts and trying it out

T-Mobile ships a gateway you plug in and place near a window; it says setup takes 15 minutes or less, and there is no technician visit. It offers a 15-day test drive, so you can cancel within 15 days of activation if the signal is weak at your home. There is no annual contract.

Xfinity offers free self-install with its gateway, or professional installation for $100. There is no annual contract on its national plans either.

Because 5G performance varies so much by address, T-Mobile’s trial is the deciding feature: if you’re unsure, test it during the trial window while keeping your current service, then cancel whichever you don’t keep.

One more cost to plan for: T-Mobile’s best prices assume autopay with a debit card or bank account and, for the lowest rates, an active T-Mobile voice line. If you later cancel your phone line, your home internet bill rises to the internet-only price. Xfinity’s listed prices also assume autopay and paperless billing, and professional installation adds $100 if you want a technician. Neither charges a monthly equipment fee for its standard gateway.

Customer satisfaction

In the American Customer Satisfaction Index 2026 study, ACSI reports T-Mobile 5G Home Internet by region rather than nationally: it scored 79 in the Northeast and the South and led the West at 80, well above Xfinity’s national cable score of 71 and the non-fiber average of 71. Xfinity Fiber, where available, scored 77.

Review sites are harsh on both. T-Mobile’s Trustpilot page, which covers all its services, shows 1.4 out of 5 from 8,717 reviews, and some reviews describe unstable home internet connections and lag in online games. Xfinity’s Trustpilot page shows 1.2 out of 5, and Comcast’s BBB profile logged more than 26,000 complaints across all Xfinity services in three years.

Satisfaction surveys reflect averages, not your street. The best predictor for T-Mobile is the signal at your address, which is why the 15-day test drive matters. For Xfinity, ask neighbors about outages and check whether Xfinity Fiber, which scored 77 in ACSI 2026, is offered at your address instead of cable.