How to confirm that your Galaxy smartphone in Genuine or Fake?

This is very common today that many fake smartphones are available in the market which look like same as genuine one but have a lot of difference than the original smartphone. I will tell you the method to check and confirm about Samsung Galaxy smartphone with this code

dialing the code you will have a screen as shown in picture with different categories containing sub menu. After tapping on each menu, the phone will perform the selected task of hardware and software. With these tests, you will able to know the performance and genuineness of the smartphone.

Dial *#0*# and enter the test mode screen.