Indeed, your ZeRound3 has two Bluetooth antennas: 3.0 and 4.2 BLE
- Bluetooth 3.0 refers to call and audio functions.
- Bluetooth 4.2 refers to the notification and data synchronization functions.
If you do not want to use the call and audio function, you can disconnect the Bluetooth 3.0 connection from the Bluetooth settings of your smartphone.
Android User
- Go to the Bluetooth settings of your smartphone.
- Select the ZeRound3 device.
- Disable the audio call profile.
iOS User
- Go to the Bluetooth settings of your smartphone.
- Tap on the i icon to the right of the ZeRound3 device.
- Click on disconnect.