Learn more about activating your Xfinity Gateway or an approved customer-owned third-party modem using the Xfinity app. Xfinity For full functionality of this site it is necessary to enable JavaScript.. Download the Xfinity app on your mobile phone to activate your internet in minutes. Make sure your phone is on your cellular network and click the appropriate link below to get started. If you are in a location with a pre-installed gateway or activating your Xfinity Voice click here to begin.
How do I activate my replacement xfinity gateway router? 1. Open the app and sign in with your Xfinity ID and password. 2. Select Get Started to begin the setup process.. Learn about the WiFi Ready service activation process.