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Fri, Aug 11, 2017 9:00 AM


ANSWERED: How to purchase and install your own voice modem with Xfinity Phone service

Keep in mind there are advantages to using an Xfinity Wireless Gateway, including access to value-added services such as xFi – our WiFi management platform – and usage of a home-based Xfinity WiFi hotspot.

Before making the decision to use your own equipment, find out what the Xfinity Wireless Gateway has to offer, including coverage, features, speed, and exclusive Xfinity services.

Find Out If Your Equipment Is Approved and Compatible with Xfinity Services

  1. Before buying your own equipment, use the My Device Info website to easily check if your device is approved for Xfinity Internet and/or Voice service.
  2. My Device Info shows a database of all approved cable modems. You can also use this site to make sure your modem or router supports your selected Internet speed tier.
  3. After checking this website for approved retail devices, visit for up-to-date information on the Internet speeds and other offers available in your area.

If you don't know your level of service, check   your Xfinity services.

Identifying Approved Retail Devices

Before buying a retail device through a third-party retailer, go to the   My Device Info  page to better understand which devices are approved by Comcast. For more details, see the Frequently Asked Questions below.
  1. To get a personalized experience, go to from your web browser and click Sign In. Then, sign in using your Xfinity ID and password.
    • Note: If you don't sign in or aren't an Xfinity customer, you'll need to enter your ZIP Code and select a Download speed from the drop-down menu. Then, click the Find equipment button to show all equipment compatible with the download speed you chose.
      Welcome screen with fields for Zip Code and Download speeds. 
  2. Search for the specific retail device brand or model that you're considering purchasing. If the product isn't listed, it might not be supported by Comcast.
    Search field.
  3. Click the View details link under the thumbnail image of a specific device. You can narrow search results by using the filters available on the left-hand side of the screen. Filtering options include:
    • Download Speed
    • Voice/Telephone Enabled
    • Show Unsupported Devices
      Note: This filter only appears if you search through the Search for equipment field.
    • Built-in WiFi
    • Brand
    • DOCSIS Channels
    • DOCSIS Version
  4. If the device is compatible with your Xfinity Internet and/or Voice service, you'll see a message under the thumbnail image with details about the product, including Device Type and Download Speed.
    Confirmation messaging: This device is compatible with your service download speed of 250 Mbps. 
  5. Only supported devices will appear. Non-supported devices won't show up on the site.




Additional Resources:

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