HTC 10™ - DTMF

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, navigate: Apps icon Apps icon > Settings Settings icon > Sound & notification.
  2. Tap Advanced.
  3. From the Other sounds and vibrations section, tap Dial pad tones then select one of the following:
    Note The Sound profile option (top of the screen) must be set to normal to modify DTMF settings.
    • Long tones
    • Short tones
    • Off