Gig-speed WiFi at your fingertips, at home and on the go. ⚡ With PowerBoost, our Xfinity Mobile and Comcast Business Mobile customers automatically connect to millions of Xfinity WiFi hotspots across the country delivering up to gigabit speeds. Plus, when connected to an Xfinity gateway, customers get up to gig speeds at home – regardless of their Internet plan. | Comcast