The mobile app supports Bluetooth-enabled devices for Android. Before making or taking a call using your Bluetooth headset, make sure that it is paired with your phone.
Using an Android device, you can set up your phone with a bluetooth headset in two ways. The first method is by swiping down at the top of your screen and then tapping the Bluetooth icon to turn on.
Alternatively, you can configure your Android phone settings by navigating to Settings > Connections > Bluetooth on your phone and then toggle the switch on.
Once your bluetooth is turned on, it will search for the device name of your headset. Select and tap the device name to pair.