A person can find an accurate T-Mobile 4G coverage map in the Coverage section of the official T-Mobile website and on Sensorly.com. Both websites allow visitors to input the name of their city and state, or their ZIP code, to narrow down the search process.
The official T-Mobile website provides visitors with an option to map a specific route or select multiple locations, which results in the display of a coverage area based on these parameters. The more vibrant the color, the better the signal strength. Sensorly.com uses various shades of blue to denote signal strength, whereas the official T-Mobile website uses different shades of pink. Areas that are not marked with any color feature no 4G coverage.