By connecting the mobile phone and OTG cable, you can communicate with the Biometric Wallet via USB instead of Bluetooth.
This is a device that allows you to connect a USB device to a smartphone. One side is a micro 5 pin or USB C type, and the other side is a cable with a standard USB port. Just connect the OTG cable to your Android device.
If your Android device's charging port is micro 5 pin, you must use a micro 5 pin OTG cable.
If your Android device's charging port is USB C type, you must use a USB C type OTG cable.
Please launch the descent mobile app first. (Biometric Wallet mode) Below is a picture showing that there is no connection to with the Biometric Wallet.
Connect the Biometric Wallet and the Android device as shown in the figure below.
1) When an OTG cable is connected, you will see the following pop-up. Press "OK".
2) When connection is made, Synchronization will begin with the Biometric Wallet and you can start using it when it finishes.