The sound during call is too low to be recognized.

If the sound during call is too low to be recognized, please try the following.

  1. Increase the volume of the device while calling.

    Note: If you do that while you aren't calling, the volume of notification sounds will be changed.

  2. If it is still too low to be recognized, please try the following.
    • Turn on the "Volume Up" button while calling.

      Note: The sound quality becomes somewhat inferior.

    • Turn off the "Noise Cancel" button while calling.

Note: The volume depends on the device the other person is using and sometimes he/she will sound quiet.

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