How To Activate a New Cable Modem with Xfinity

How To Activate a New Cable Modem with Xfinity

What is Cable Modem with Xfinity?

A wireless gateway (also known as a cable modem and WiFi router) is a device that functions as both a modem and a router, which means you need only one device to set up your wireless home network. You can find a list of Comcast-approved wireless gateways that match your level of service at My Device Info.

How To Activate a New Cable Modem with Xfinity

If you’re activating Xfinity WiFi Boost Pods or an Xfinity xFi Gateway (with the exception of the xFi Fiber Gateway, Arris X5001), you can use the Xfinity app for easy activation. After setup, you can use the Xfinity app for management of your home network.

To determine the type of gateway you have, check the make and model information located on the bottom of your device. You can also sign in to the Devices page on xfinity.com.

  1. Download the Xfinity app for free from Google Play or the App Store.
  2. Sign in using your Xfinity ID and password.
    • Notes:
      • If you don’t have an Xfinity ID and password, you can create these on the sign-in page.
      • If you’re activating a gateway, you might be prompted to start the activation as soon as you sign in.
        • If you aren’t prompted, proceed to Step 3.
  3. Once you’re signed in, select the Account tab from the bottom right of the Xfinity app.
  4. Select Activate xFi Gateway or Modem under the Devices section.
  5. If you’re activating WiFi Boost Pods, select Activate WiFi Boost Pods under the Devices section.
    • Note: You can also begin the activation of a Flex streaming TV Box using the Xfinity app.
    • For more information, see Xfinity Flex activation process overview.

Frequently Asked Questions

How do I get Xfinity to recognize my new modem?

If you aren’t prompted to begin the activation process as soon as you sign in to the app, navigate to the activation entry point by selecting the Account tab from the bottom right corner of the Xfinity app and then pick Activate xFi Gateway or Modem under the Devices section.

How do I call Xfinity to set up a new modem?

Try calling 1-855-652-3446. That is their device activation line. If that doesn’t work for you, you can call 1-800-comcast and tell a rep that you would like to have a new modem provisioned for service. Have the RF / CM / HFC MAC address and the serial number of it handy when you call.

Do I need to call my internet provider to set up a new modem?

You can replace your WiFi router without calling your ISP. However, if you will be replacing the cable modem, you will need to call your ISP for them to register the new cable modem.

Do I need to contact Xfinity if I get a new modem?

Modern DOCSIS cable systems use the RF MAC address of the modem to identify a modem and assign service to it. So if you expect Comcast (or Charter or Cox or any other coax-delivered ISP) to provide service to your new modem, you’re going to have to let them know about it and register it to your account.

Do you have to activate a cable modem?

To activate Internet service on your cable modem or modem router: Visit your cable Internet provider’s website and follow the onscreen instructions to activate your Internet service.

Why won t Xfinity recognize my modem?

Confirm the equipment cables are plugged in and the coaxial cable has been tightened as much as possible using your fingers to both the wall outlet and your equipment. Unplug your equipment, wait one minute and then plug it back in. This method, known as power cycling or rebooting, can fix many connection problems.

Is the new Xfinity modem difficult to set up?

Self-installing Xfinity internet service is straightforward. All you need to do is connect the Xfinity internet gateway (modem/router combo) to power and a coaxial cable (the same kind of cable used for cable TV) outlet. From there, follow the instructions provided via the Xfinity mobile app

Why is my Xfinity service not active?

Check for local outages using the Xfinity Status Center Outage Map. Confirm the equipment cables are plugged in and the coaxial cable has been tightened as much as possible using your fingers to both the wall outlet and your equipment. Unplug your equipment, wait one minute, and then plug it back in.

How do I get Xfinity customer service online?

On the Support page on xfinity.com, click Chat with Xfinity. Apps: In the Xfinity app, click the chat bubble icon on the upper right-hand corner. From the More tab in the Xfinity Home app, click Chat with an Agent.

Can I use any modem with Xfinity?

You can purchase your own retail modem for use with your Xfinity Internet and/or Voice service, as long as the equipment is certified to work on our network.