Open the Samsung Galaxy S20, S20+ and S20 Ultra Secret Service menu - Tip

Samsung smartphones have long been equipped with a hidden service menu and the Samsung Galaxy S20, S20+ or S20 Ultra is no exception. Because the service menu is hidden, it is often referred to as a secret menu.


Even though most users will never feel the need to access the service menu, it is a very interesting feature of Samsung smartphones that you should know about if you have problems with the phone and want to fix them yourself.

What can be tested in Samsung's service menu or secret menu?

Within this menu you can test the sensors, make sure that the touchscreen is ok (pixels are not burned in) and much more.

Especially if you have just received a device like the Samsung Galaxy S20, S20+ or S20 Ultra, it makes sense to take a look at this menu to find out if the hardware is working properly.

The following instructions will show you how to access the hidden service menu on your Samsung Galaxy S20, S20+ or S20 Ultra and use functions in it.

Opening the service menu on your Samsung Galaxy S20, S20+ or S20 Ultra

1. Open the phone app on your smartphone

2. Open the keypad.

3. Enter the following code:

  • *#0*#

4. The secret Samsung service menu is now displayed.

There are many functions you can test under the service menu, but for most users these are the most interesting ones.

Service Menu - Important Hardware Tests

The menu is composed of various tiles. Each tile stands for a different test.

RGB test

Tap the Red, Green and Blue tiles along the top to easily check for dead pixels on your display. When you have completed the test, simply tap the screen to return to the Service Menu main menu.

Touch Test

With this test you can check the accuracy of the touch screen of your smartphone. Trace the outer square and inner X with your finger to make sure that the touchscreen registers each square you pass over.

As you tap the screen, you'll see where the touchscreen also registers your touches.


This menu is intended for advanced troubleshooting and tests all sensors in your Samsung Galaxy S20, S20+ or S20 Ultra.

From accelerometer to gyroscope, you can get all the information you need here. Interesting here is for example the barometer or the compass calibration function.

How can the service menu be closed on the Samsung Galaxy S20, S20+ or S20 Ultra?

To exit the service menu on your smartphone, simply tap the back button twice in succession. This will take you back to the phone app, where you can access the Android system again.

You now know how to open the secret service menu on Samsung Galaxy S20, S20+ or S20 Ultra and run tests in it.

About the Author

Manuel Solvemix Team small

Manuel has been involved with technology for more than 15 years, especially with mobile phones, smartphones and PC systems and shares his passion here in this blog. If he can help someone with a technical problem, he is especially happy about it.