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New internet set-up

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New internet set-up

I just switched from AT& T to Comcast & I know I just need to plug in my modem - then what? I have to change on cell phones & smart tv... they did not include instructions!!!!!!
Thanks for any help I can get to keep from having to call a service man.

Re: New internet set-up

Plug in Your Gateway

  1. Plug the power cord into your Gateway and then into an electrical outlet.
  2. Screw one end of the coaxial cable into the Cable In/RF In port on your Gateway and the other end into the cable wall outlet. Make sure the connections are finger tight.

Wait for Your Gateway to be Ready

Your Gateway may reboot, and it could take up to 20 minutes for it to be ready to activate. Make sure the lights appear as described below before moving on to the next step. Do not unplug your Gateway during this process.
  • If your Gateway has multiple lights on the front, the Power, US/DS, and Online lights should remain solid for at least one minute and the WiFi light(s) should start blinking.
  • If your Gateway has only one light, it should remain solid white for at least a minute.

Establish a Temporary Internet Connection to Activate

If you prefer to use a smartphone, tablet, or laptop with WiFi connection:
  1. Look for the Network Name (SSID) and Password printed on the side, back, or bottom of your Gateway (the name should look like Home-XXXX or XFSETUP-XXXX).
  2. Select the name from the list of available networks on your WiFi-enabled device and enter the password when prompted. If you're prompted to enter a PIN instead of a password, click the Connect Using a Security Key link to enter the password found on the Gateway.
If you prefer to use an Ethernet connection:
  • Plug the Ethernet cable into one of the open ports on your Gateway until it clicks. Plug the other end into the Ethernet port of your computer. The Ethernet port will light up when successfully connected.

Activate Your Gateway

  1. Once you've established a temporary Internet connection, if you're not automatically presented with a welcome message to begin setup, open a web browser and navigate to Follow the on-screen prompts to verify your Xfinity account and complete the activation process.
  2. When you've finished activation, your Gateway may reboot. It may take up to 10 minutes after activation before you can connect to your home network.

Connect to Your Home Network

After the Gateway has been activated and after a possible reboot, you may need to connect your devices to your home network if you changed the network name and password.
  1. Go to the WiFi settings on your WiFi-enabled devices (e.g., smartphone, smart TV, laptop).
  2. Select your home network WiFi name and connect with the password. If you changed this during or after activation, be sure to use the new one you set up.

Need Additional Help?

If you're having trouble activating your Gateway or Xfinity services, please call 1-855-OK-BEGIN (1-855-652-3446).

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