To activate Xfinity streaming on your TV, follow these simple steps. First, ensure your Xfinity streaming device is properly connected to your TV and internet. Turn on your TV and switch to the input where the device is connected. Open the Xfinity app on your device, and you’ll be prompted to enter an activation code. Visit xfinity/authorize website (https://xfinitycom-authorize.com/authorize/) from your computer or mobile browser. Enter the activation code displayed on your TV screen and follow the on-screen instructions. Once the activation is complete, your Xfinity streaming service will be ready to use. Enjoy watching your favorite shows and movies with ease!