To turn RTT on:
1.
Tap .
2.
Tap > Settings > Accessibility.
3. Tap the real-time text option and turn it on or select when you want it to appear.
To make a call with RTT:
1.
Tap .
2. Call the number.
While the phone rings, the other person's screen displays an RTT indicator.
3. After the other person answers, enter a message in the text field.
The text that you enter is visible to the other person as you type.
4.
During a call, you can tap to mute the call, turn on the speaker, return to the keypad, or add a call.
5.
To end the call, tap .
Set up TTY device
Not all carriers support this feature.
For text-based communication, you can use text messaging and email.
If you prefer to connect to a TTY device:
1.
Tap .
2.
Tap > Settings > Accessibility > TTY mode.
3. Select a mode:
•
TTY Full: Type and read text on your TTY device.
•
TTY HCO: Type text on your TTY and listen to voice replies on your phone.
•
TTY VCO: Speak into your phone and read text replies on your TTY.
4. Connect your phone and TTY with the audio cord that came with your TTY.
Settings : Accessibility 232