Service not available without Xfinity Internet or subscription to Digital Starter TV, or equivalent, or above. Peacock Premium: Eligible X1 TV box or Flex 4K streaming box required. All devices must be returned when service ends. 1 device included, additional devices $5/mo. Requires post-paid subscription to Xfinity Internet, excluding Internet Essentials. For factors affecting speed visit Flex: Not available to current Xfinity Video customers. WiFi speeds affected by additional factors, including distance from Gateway, home configuration, personal device capabilities, and others. Many factors affect speed, including equipment performance, interference, congestion, and speeds of visited websites. Actual speeds vary and are not guaranteed. Gig-speed WiFi is shareable across all the devices in your home. Gig-speed over WiFi requires Gigabit Internet and compatible xFi Gateway. Must activate Advanced Security through Xfinity app. xFi Advanced Security is available to Xfinity Internet customers with a compatible Xfinity xFi Gateway. Not available to Xfinity Prepaid only customers. Internet: Xfinity xFi is available to Xfinity Internet service customers with a compatible Xfinity Gateway. 30-Day Guarantee applies to one month's recurring service charge and standard installation. Pricing and programming subject to change. Services and features vary based on service level.