TextNow offers free, ad-supported talk and text plus paid data options. Its cellular service runs over T-Mobile's network, so the map above shows T-Mobile coverage.
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 TextNow 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.