The most convenient and cost-effective WiFi extender for Xfinity customers is a mesh WiFi system. Check out our top picks for most users and heavy users.

3. Set up your Wi-Fi router Each Wi-Fi router has its own setup process, so you'll want to follow the instructions provided.

Comcast's Xfinity division has made some forays into the smart home world already: Xfinity Home started out as a home security product, but it now handles a number of common devices like locks ...