There is no “TTY” setting in settings.
Android has a TTY mode which allows people who are deaf or have a speech disability to use the phone with a text-to-speech engine.
When TTY mode is off, the computer will use the default text input method. This is usually a keyboard and mouse, but can also be a touchpad or trackball.
To turn off TTY mode on your Motorola phone, go to the Settings menu and select Phone. Under the “Display” heading, you will see a toggle for TTY mode. To disable TTY mode, simply switch it off.
The function of TTY mode is to allow people with disabilities to communicate with computers.
RTT is a communication protocol used on Android devices to communicate with other devices over the network.
The Samsung Galaxy S8 and S8+ have a TTY mode that allows people who are deaf or hard of hearing to use the phone like a regular phone. To turn on TTY mode, go to Settings -> Communications -> TTY Mode.
After a phone number, TTY stands for “teletypewriter.
There is no specific uninstallation procedure for RTT on Android, but most likely you will need to go through the app’s settings and disable the service.
RTT (Real-time Transport Protocol) is a network protocol that enables two devices to communicate as if they are in the same local area network. TTY (Teletype Terminal) is a type of terminal used for text input and output.