It is pretty easy to use, just use associated cable to connect to the car OBD outlet to read data and Micro USB power cable(also associated) to car DC power, press correct button to start scan and test, the whole diagnostics process should be very fast, it only took less one minute with my 2016 corolla. btw language and unit displayed can also be changed through "settings" menu.
Replied by Julia on Mar 7, 2020
Hello dear friend
thank you for your support!
have a nice day!