Xfinity Mobile includes a free feature called Spam Detection. You can enhance this by downloading the Xfinity app to: Enable "Silence Unknown Callers" (via device settings).
Xfinity Mobile includes a free feature that automatically detects and blocks likely spam calls. xfinity block number
The most comprehensive way to manage your blocked numbers is through the Xfinity web portal. This allows you to block up to 25 specific phone numbers. Xfinity Mobile includes a free feature called Spam Detection
: Open Phone app → Menu (three dots) → Settings → Blocked numbers . xfinity block number