Manage TTY Settings - HTC Desire® 612

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, tap Phone Owner Info Settings icon (located at the bottom).
    Note If not available, navigate Apps > Phone.
  2. From the Phone tab, tap Menu Menu (located in the upper right).
  3. Tap Settings.
  4. Tap TTY mode then tap one of the following:
    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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