To check the WiFi password in the T-Mobile Internet app, please follow these steps:
-Ensure you are connected to Wi-Fi and open the T-Mobile Internet App.
-Tap More about connection quality at the bottom of the screen.
-Navigate to the Network screen. This section allows you to manage Wi-Fi settings, including viewing and changing your Wi-Fi network name and password
-If you wish to view or change the Wi-Fi network password, select the network you want to modify. There should be an option to view (by tapping the eye symbol) or change the password by selecting the text box under Wi-Fi network password and entering a new password.