T-Mobile Network App
The Network app is available for all T-Mobile customers. By installing this app, you help T-Mobile to collect valuable information about the quality of the network. As a user, you could test your internet connection with an unlimited amount of speed tests. Within the app, you can share your network experience with T-Mobile. There is also a 'Coverage Diagnosis' in the app, where T-Mobile can collect your coverage data for seven days.