Apple® iPhone® - Manage RTT / TTY Settings

Note Notes:

  • If you aren't hearing audio on a call, press the Microphone icon Microphone icon to enable simultaneous voice and text.
  • When TTY (teletypewriter) settings are enabled, you can use your phone with a TTY device if you're deaf or hard of hearing.
  • The steps below apply to the following models:
    • iPhone X / XS / XS Max / XR
    • iPhone 8 / 8 Plus
    • iPhone 7 / 7 Plus
    • iPhone SE
    • iPhone 6 / 6 Plus / 6s / 6s Plus
    • iPhone 5 / 5c / 5s
  • For other models, click the applicable link for instructions:

Enable RTT / TTY
Answer All Calls as TTY
Make a Call with RTT / TTY
Switch a Call to RTT / TTY
End a RTT / TTY call
View RTT / TTY Transcript

Enable RTT / TTY

Note Real-time text (RTT) is a feature that allows for those with hearing or speech impairments to carry on a conversational text via a phone call.

  1. From the Home screen, navigate: Settings Settings icon > General General Settings icon > Accessibility.
  2. Tap RTT/TTY (under Hearing).
  3. Tap the Software RTT/TTY switch to turn on on switch .
    Note Allows you to make and receive RRT / TTY phone calls.
  4. Tap the Send Immediately switch to turn on.
    Note Allows you to send characters as they are typed.

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Answer All Calls as RTT / TTY

Note When enabled, RTT/TTY call defaults to text-only, but you can add voice to the RTT call by pressing the microphone icon to enable simultaneous voice and text.

  1. From the Home screen, navigate: Settings Settings icon > General General Settings icon > Accessibility.
  2. Tap RTT/TTY (under Hearing).
  3. Tap the Software RTT/TTY switch to turn on on switch.
  4. Tap the Answer All Calls as TTY switch to turn on.
    Note Prevents all calls from being answered as voice calls.
  5. Tap Answer All Calls as TTY to confirm.

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Make a Call with RTT / TTY

Note RTT / TTY has to be enabled for calls to be answered in RTT mode on a compatible device.

  1. From any Home screen, tap the Phone icon phone icon.
  2. From the Contacts section, select a contact or your 10-digit mobile number.
  3. Tap the Call icon Contact calling icon.
  4. Tap 'RTT/TTY Call' or 'RTT/TTY Relay Call'.
  5. While call is connected, tap the RTT icon RTT call icon.
  6. Type your message.
    • When 'Send Immediately' is enabled in settings, recipient sees message as you type.
    • If not, enter your message then tap arrow up icon arrow up icon to send.

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Switch a Call to RTT / TTY

Note Make an audio call to a compatible RTT /T TY device, then switch over to RTT / TTY mode.

  1. From any Home screen, tap the Phone icon phone icon.
  2. From the Contacts section, select a contact or your 10-digit mobile number.
  3. Tap the Call icon Contact calling icon.
  4. Tap Use RTT.
    Note Mute changes to RTT.
    Use RTT/TTY
  5. Tap RTT to open text conversation.

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End a RTT / TTY call

  1. Tap Back (upper-left).
  2. Tap End call icon End Call icon.

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View RTT / TTY Transcript

  1. From any Home screen, tap the Phone icon phone icon.
  2. From the Recents tab, scroll to the preferred RTT / TTY call.
  3. Tap Info icon Info icon (far right).
    Note Tap the appropriate call time; there may be more than one.
  4. To save a conversation, tap the Download icon Download icon (upper-right) then follow on-screen prompts.

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