The remaining battery charge of the headset is not displayed on the screen of smartphone.

  • Only the iOS devices (including iPhone/iPod touch) which support HFP (Hands-free Profile), and Android smartphone (OS 8.1 or later) can display the remaining battery charge.
  • Check that the smartphone is connected with HFP. If the smartphone is not connected with HFP, the remaining battery charge will not be correctly displayed.