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Samsung Galaxy S21 FE 5G - Manage RTT Settings

2026-10-22 19:15:39.164

Samsung Galaxy S21 FE 5G - Manage RTT Settings

Here's how to use the real-time text (RTT) functionality on your Galaxy S21 FE 5G.
Real-time text (RTT) is text transmitted instantly as it is typed or created. Recipients can immediately read the message while it is being written, without waiting or need for an additional device.

Change RTT Visibility

  1. From a Home screen, swipe up to access the apps screen.
    These instructions only apply to Standard mode and the default Home screen layout.
  2. Navigate:
    Settings Settings icon
    Accessibility
    Hearing enhancements
    .
  3. Tap
    Real Time Text
    .
  4. Tap
    RTT call button
    .
  5. Select the preferred setting:
    • Visible during calls
      : Show the RTT call button only during RTT calls.
    • Always visible
      : Show the RTT call button on the keypad and during all calls.

Make a Call with RTT

  1. With RTT enabled, from a Home screen, tap the
    Phone icon
     Phone icon.
    If unavailable, swipe up from the center of the display then tap
    Phone
    .
  2. Do one of the following:
    • From the Keypad tab (lower-left), enter a 10-digit number then tap the
      RTT call icon
       (at the bottom).
    • From the Contacts tab (lower-right), select a contact then tap the
      RTT call icon
      .

Switch a Call to RTT

  1. While on a call, tap
    Real Time Text
    .
    Real Time Text

End an RTT Call

  1. While on a call, tap
    End
    .