NOTE: Just enable Bluetooth settings on your iOS device. DO NOT Need to connect Bluetooth Name on iOS device. Then connect the Bluetooth device name in the OBD app setting.
Step1: Open the app and click on "Settings".
Step2: Click on:"lnterface".
Step3: Select:"ELM327 Bluetooth (4.0 only)".
Step4: After selecting "Interface", go back to the home page.
Step5: Click on:"Connection".
Step6: Select:"IOS-Vlink"
Step7: Wait for the app to connect to the iCar Pro.
Step8: Select your car model.
Step9: Wait for the app to connect to the car ECU.