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How Do Comcast XFINITY WiFi Hotspots Work? Comcast XFINITY is one of the largest providers of Internet services in the United States, with over 18 million Internet customers across the country. One of the little known benefits of being one of their Internet customers is that you get access to Comcast XFINITY WiFi Hotspots â for free.
Prior to Installation. 1  Locate the required information to activate XFINITY Internet service online: 2  Comcast Account Number. 3  Phone Number (associated with Comcast account) NOTE: The Comcast account number can be found on your billing statement, via the Comcast app or the work order for the service you requested from Comcast.