Pick your state on the map
Select a state to open its coverage guide.
Coverage maps for every carrier
Carrier maps show where each network says it reaches. Independent maps show what phones actually measure. Check one of each.
Before you switch
A covered area on the map can still have slow data when towers are busy.
Many cheaper plans get lower priority, so they slow down first on a busy tower.
Several carriers let you try their network on your own phone, free, for up to 30 days.
Browse coverage by state
All 51 coverage guides · tap one for its full guide
Popular city guides
Neighborhood-level picks for the metros people ask about most.
FAQ
Which carrier has the best coverage?
Verizon reaches the most land, which matters most in rural areas and on road trips. T-Mobile has the most 5G, and AT&T sits between the two. Which one is best where you live depends on your area, so open your state guide.
Do cheaper brands get the same coverage as the big carriers?
They use the same towers, so the coverage map is the same. What can differ is priority: on many cheaper plans your data slows down first when a tower is busy.
How accurate are carrier coverage maps?
They predict outdoor signal, so they tend to look better than real life, especially indoors and at the edge of an area. Compare the carrier’s map with CoverageMap, which uses tests from real phones.
How do I check coverage at my address?
Enter your address on the FCC National Broadband Map to see what each network reports there, then check CoverageMap for real-world signal nearby.
How do I test coverage before I switch?
Several carriers offer a free trial on your own phone using eSIM, so you can keep your current line while you test. See our free trials page for the current list.