Where Is 4G Service Available?

4G service is still in its infancy, and is not yet widely available. Each carrier's service is offered in different locations.
Here are the details on where 4G service from each carrier currently is available.

Sprint

Sprint, which was the first cellular carrier to offer 4G service, has continued to expand its network. As of this writing (December 2010), Sprint's 4G network is available in 68 markets.
For a detailed list of cities with 4G coverage, see Where Is Sprint 4G Service Available?.
To check availability in your area, visit Sprint's Web site.

Verizon Wireless

Verizon's 4G network was launched in early December 2010 in 38 major metropolitan areas.
For a detailed list of cities with 4G coverage, see Where Is Verizon 4G Service Available?.
To check coverage in your area, visit Verizon's Web site.

T-Mobile

T-Mobile's HSPA+ network is not a true 4G network, but does deliver speeds faster than a typical 3G network; it's considered more of a 3.5G network than a true 4G network. The HSPA+ network is available in 75 markets.
For a detailed list of cities with 4G coverage, see Where Is T-Mobile 4G Service Available?.
To check coverage in your area, visit T-Mobile's Web site.

AT&T

AT&T does not yet offer a 4G service, but plans to launch one in 2011.