The car diagnostic device works via Bluetooth through an app that you can download for free from the mobile store in Arabic. (It shows you all the faults just like the diagnostic devices in shops.) Save your money and no longer need to go to the shops for inspection. You can also know the trouble codes, turn off the check engine light, and erase errors, revealing over 3000 issues. The car diagnostic device operates via Bluetooth for both Android and iPhone. It connects to the car's computer and displays the malfunctions on your mobile phone or computer via Bluetooth. It can erase the check engine light and shows you all the current data: 1 - Engine RPM 2 - Calculated load value 3 - Coolant temperature 4 - Fuel system status 5 - Vehicle speed 6 - Short-term fuel trim 7 - Long-term fuel trim 8 - Intake manifold pressure for fuel and air mixture.