No sound

  • Check that both the headset and the connected device (i.e., smartphone) are turned on.
  • An A2DP BLUETOOTH connection is not made between the headset and the BLUETOOTH device. Use the BLUETOOTH device and make an A2DP BLUETOOTH connection.
  • Turn up the volume of the headset and the connected device (i.e., smartphone).
  • Check that the connected device is playing back.
  • If you are connecting a computer to the headset, make sure the audio output setting of the computer is set for a BLUETOOTH device.
  • Pair the headset and the BLUETOOTH device again.
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