Moving to a new city, switching carriers, or just want to know if your phone's going to work at the beach this weekend? Let this app's nationwide coverage maps be your guide. Each of the four major carriers is overlaid in a different color on a Google Map, showing you which service is available in any given area.
WIRED Displays carrier maps individually or head-to-head. Separate maps for 2G, 3G, 4G, and roaming.
TIRED Maps aren't precise enough for neighborhood-level detail.