What Does a Samsung Test Code Do? What Does a Samsung Test Code Do? When we dial the code Samsun *#0*#, a menu appears on the screen. In this menu, we have the opportunity to check and detect some malfunctions of the phone. I will try to explain the testing tools we will need. Now let's look at the control panel that will appear in this menu. First of all, you need to unlock the phone's keypad. Then, using the keys *#0*# […]