download link:ALDLdroid - Google Play
Step1:
Open your phone's Bluetooth Settings, search for and tap "vLinker FD".
Step2:
A request pairing prompt will be generated when pairing, enter the pairing code "1234" and click "OK".]
Step3:
Successfully paired to the Bluetooth device "vLinker FD".
Step4:
Click on the button in the upper right corner.
Step5:
Click on "Settings"
Step6:
Click on "Bluetooth device"
Step7:
Select the Bluetooth device "vLinker FD".
Step8:
Go back to the home page and click the button in the upper right corner.
Step9:
Click on "Connect to ECU"
Step10:
Connected successfully.