Optimum Mobile Coverage
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Optimum Mobile Coverage Map

Optimum Mobile runs over T-Mobile's network with access to both T-Mobile's 4G service and T-Mobile's 5G service.

The map displays predicted outdoor signal quality. Indoor signal, congestion, and roaming coverage aren't mapped. Each can matter in practice.

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Data Sourcing

Cell coverage data for Optimum 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.