Xfinity Mobile runs over Verizon's network. Cell coverage is further supplemented by Xfinity's network of over 20 million WiFi hotspots.
The map displays predicted outdoor signal quality. Indoor signal, congestion, and roaming coverage aren't mapped. Each can matter in practice.
Cell coverage data for Xfinity Mobile comes primarily from the May 2026 release of the FCC's Broadband Data Collection program (representing networks as of December 2025), supplemented with real-world measurements from large crowdsourcing projects.