Compare coverage maps for
AT&T, T-Mobile, Verizon, and others

About Coverage Critic

Coverage Critic's maps draw on data from the FCC and real-world, crowdsourced signal measurements. Search for a location to compare AT&T, T-Mobile, and Verizon coverage where you live or travel.

Head-to-head comparison maps are also available:

• AT&T vs. Verizon
• AT&T vs. T-Mobile
• Verizon vs. T-Mobile

Coverage Critic's work has been referenced or featured by The New Yorker, PCMag, and Mr. Money Mustache. Details about how Coverage Critic earns money and which carriers it partners with are shared on the transparency page. Commentary and analysis on the wireless industry can be found on the Coverage Critic blog.

Coverage Map

The coverage map shows native, non-roaming, coverage from US networks. Predicted outdoor signal strength is displayed.

Usage

• Zoom close for the most detailed coverage data available
• Click hexagons for details about a specific area
• Use the search bar to find specific places

From the Settings Menu (top right button):

• Generate custom, sharable links
• Hide UI elements (helpful on mobile!)
• Explore additional networks (e.g., GCI or Cellcom)
• Turn on colorblind-friendly mode

Data Sources

Cell coverage data comes primarily from the FCC's Broadband Data Collection Program. The last round of data incorporated in the map was released in May 2026 and represents networks as of December 2025.

New editions of the FCC data are released roughly every 6 months. The FCC data is supplemented and adjusted with the help of crowdsourced, on-the-ground data.

Limitations

• The map shows native, non-roaming coverage. Many plans include substantial roaming coverage.
• Predicted outdoor, stationary signal strength is shown in the map. Signals may be weaker indoors.
• Networks are inconsistent in how they report coverage over bodies of water.