Your phone can use an optional TTY (teletypewriter) device, for people who are hard of hearing or have a speech impairment. You need to set your phone to TTY mode to use the TTY device. You may need a cable/adapter to connect your TTY device to the headset jack on your phone. Refer to your TTY device guide for TTY mode and usage information.
To set the TTY mode
- From your Home screen, tap .
- Find and tap Settings.
- Tap Call settings > TTY mode.
- Select an option.