DTMF - HTC One® M9

If you're calling into an automated dial-in system (e.g., voicemail) and your dialpad entries aren't being recognized, view this info.

Note Dual-tone multi-frequency (DTMF) tones are used by automated dial-in systems such as voicemail or where prompts are used to navigate.

  1. From a Home screen, tap the Apps icon Apps icon (located at the bottom).
  2. Tap Settings.
    Note If unavailable, tap the Dropdown menu Applications dropdown menu icon (located in the upper-left) then select Alphabetical. If still unavailable, refer to Manage App Icons.
  3. From the DEVICE section, tap Sound & notification.
  4. From the SYSTEM section, tap Keypad touch tones then select one of the following:
    Note The Sound profile option (at top of the screen) must be set to Normal to modify DTMF settings.
    • Long tones
    • Short tones
    • Off
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