- App: Tap Log In → Start Activation → Enter Modem MAC number → Check Connection Continue to Xfinity.
- Online: Visit activation page → Verify Xfinity account → Activate
Xfinity modem is an all-in-one device that serves internet connection, voice, network security, and more functions. It is also known as xFi Gateways, available in different specifications and features for home and business use. Moreover, Xfinity offers other products such as Xfinity Mobile, Xfinity Streaming, etc. If you’ve purchased the Xfinity modem, you need to activate it to use the internet and voice features. You can activate the Xfinity modem in two ways.
- Xfinity app
- Xfinity activation site
Features of Xfinity Modem
1. It lets you connect with voice, network security, and parental controls to experience ultimate wholesome coverage.
2. Depending on the subscription plan, users can access the extended coverage, speed, control, and security updates.
3. Xfinity offers internet speed upto 6000 Mbps which is more than other network services.
4. You can connect unlimited devices such as tablets, gaming systems, thermostats, etc.
Activate Xfinity Modem Using App
 Launch the Xfinity app and start logging in with your credentials.
Note: Remember, you should be the primary user or manager to access the app and activate the service. So, use the ID and password of the primary user.
 Once your internet connection has been detected, you will get a prompt as Start Activation.
 Next, connect the coax cable to the outlet and the modem’s back. If you have the Xfinity voice feature, connect your phone cord from the back of your phone receiver and connect with the modem after connecting your coax cable.
 Plug the modem’s power cord into the outlet.
 Enter your Modem’s MAC number, and hit Next.
 A prompt message pops up on your screen, and tap Check Connection.
 Once connected, your Xfinity service will be activated within a few minutes.
 If you’re using Xfinity voice, your Xfinity voice number will be displayed. If you haven’t subscribed to the voice feature, you will receive the confirmation only.
With the app’s help, you can view your modem status, payment details, speed tests, and other information. If your activation fails or any problem occurs, you can contact Xfinity Support to troubleshoot the error by text or call.
Tips! If you are unsatisfied with Xfinity Modem, you can purchase and activate Spectrum Modem for its robust features and specifications.
Activate Xfinity Modem Online
Before you activate online, certain requirements must be considered to avoid mishaps during the activation process. First, ensure your modem or gateway is ready for activation with a light blinking on the front and top, based on the model. Next, establish a temporary internet connection via Ethernet or WiFi and proceed with the activation process.
 Launch a web browser on a smartphone or PC.
 Go to the xfinity.com/activate page and click Here.
 Click Mobile phone number or Xfinity ID & Password to verify your Xfinity account.
 Type your mobile phone number, and click Next.
 Enter the OTP that you’ve received on your registered mobile number. Click Next.
 Wait until the activation process finishes. When the configuration is over, you can connect with other internet-linked devices. After the activation, your gateway will restart only after 10-15 minutes.
On your smart TV, navigate to Network Settings → Select WiFi or Wireless (Your smart TV starts searching for the network) → Select the network → Enter the password → Connect.