Several websites offer charts comparing wireless coverage of cell phone companies, including PhoneArena.com, CNET.com and MyRatePlan.com. PhoneArena.com offers a map that compares the coverage areas of the major cell phone providers, CNET provides a comprehensive list of cities and their coverage and MyRatePlan.com offers a search feature for coverage.
The map on PhoneArena.com gives visitors a general overview of the different areas of coverage for the major phone providers. As of 2015, Verizon and AT&T have the most extensive coverage, while Sprint and T-Mobile have more limited coverage. The list on CNET allows users to find the city they live in and see which providers offer the best coverage in it.
At MyRatePlan.com, users enter a ZIP code, address, city and state, and then see what providers offer the best services in their location, including data, voice and messaging and 4G LTE.