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: Click the Settings button in the upper right corner.
Step2: Click on "Add OBD-II reader"
Step3: Click on "Vgate vLinker/iCar BLE/BT4.0"
Step4: Select OBD-II reader "vLinker BM-IOS".
Step5: Return to home page after selecting OBD II device.