T-Mobile USA has introduced Personal Coverage Check, an interactive map available online and in stores that shows signal strength down to individual streets and intersections. T-Mobile is the only national carrier to reveal its network capabilities in detail. Other companies give only a general idea of which cities and highways their networks encompass. While the map has helped sway some people that they will be satisfied with T-Mobile, it has steered some people away from the provider in areas where coverage is weak.