Product Overview: Xfinity Mobile (Cellular Data Plans)

Xfinity Mobile service is a hybrid wireless service combining Verizon's cellular network with the network of 16 million Xfinity Wi-Fi hotspots on smartphone devices. The data service automatically switches between whichever is available.

Xfinity Mobile is available to all Xfinity internet subscribers, but, you have to be a Comcast cable TV and internet (both!) customer to sign up. So if you do not have Comcast cables in a stationary neighborhood, this service is not available to you.

The base monthly service of unlimited talk and text is included for free with the internet service - and you only pay for the data package you want. Mobile hotspot use is included with both of Xfinity's plans.

As of January 2018, you no longer have to buy phone from Comcast that is specially configured to work with their Wi-Fi network (this was a requirement at launch). Comcast does still offer iPhones and certain LG and Samsung phone models either for full price purchase, or via a 24-month installment plan.

The plans and devices are internationally capable, and Comcast offers international roaming rates for talk, text and data based upon the country.

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Policies & Perks:

  • Domestic Roaming: If no WiFi hotspot or native Verizon coverage is available, Xfinity supports domestic roaming per Verizon.
  • Throttling: Speeds are throttled at 20GB to 1.5Mbps down, and 750kbps up.
  • International: The plans and devices are internationally capable, and Comcast offers international roaming rates for talk, text and data based upon the country.
  • Mobile Hotspot Use: Mobile hotspot use is permitted.
  • Data Roll Over: Base data allotment does not roll-over.
  • Overage Charges: None. If you are not on the unlimited plan, data is $12/GB. If any month you need more than about 3GB of data, you can switch to Unlimited.
  • Streaming: No free streaming services are included - all video services (even Comcast's own Xfinity apps) count.
  • Unlimited Data Plans: An 'Unlimited' plan is offered, but speeds are throttled after 20GB of cellular usage per month. This isn't "network management" like AT&T, Verizon, and T-Mobile use now to slow heavy users down only when the towers are congested. With Xfinity Mobile, once you cross 20GB you are slowed down for the remainder of the month no matter what the tower load looks like. The good news: the throttled speed cap is 1.5Mbps for downloads, and 750kbps for uploads. This is fast enough for basic standard-definition video streaming, and many customers may barely feel the impact.

Testing Status: We do not keep an Xfinity Mobile plan in our testing arsenal.

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Xfinity Mobile


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Quick Take

Xfinity Mobile offers an unlimited data plan for Comcast cable TV and internet customers.

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