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The coverage map shows native (non-roaming) coverage from Verizon, AT&T, and T-Mobile. Hexagon coloring reflects predicted signal quality, not just whether an area has coverage.
The map reflects predicted outdoor signal quality. Indoor signal, congestion, and roaming aren't mapped. Each can matter in practice.
Cell coverage data comes primarily from the November 2025 release of the FCC's Broadband Data Collection program (representing networks as of June 2025), supplemented with real-world measurements from large crowdsourcing projects.