Manage TTY Settings - HTC One®

Note When TTY (teletypewriter) settings are enabled, you can use your phone with a TTY device if you're deaf or hard of hearing.

  1. From a Home screen, navigate: Apps Apps icon > Settings.
    Note If unavailable, tap the Apps dropdown menu Apps dropdown menu icon (located in the upper-left) then tap Alphabetical. If still unavailable, refer to Manage App Icons.
  2. Tap Call.
  3. Tap CDMA call settings.
  4. Tap TTY mode.
  5. Tap the desired TTY mode.
    TTY Off
    Disables all TTY settings
    TTY Full
    Enables all TTY settings
    TTY HCO
    Enables HCO (Hearing Carry Over)
    TTY VCO
    Enables VCO (Voice Carry Over)
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