Alfa OBD Download link: AlfaOBD - Google Play
Step1:
Open your phone's Bluetooth Settings, search for and tap "vLinker FD-Android".
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-Android".
Step4:
Open the app and click on Bluetooth.
Step5:
Select the paired Bluetooth device "vLinker FD-Android".
Step6:
Connected successfully.