On my Galaxy J700P, when I clicked on "About Device" and rapidly tapped on "Android Version" 3-4 times, I accidentally found a hidden icon. Then, you have to press and hold on that icon for about 3 seconds and it will take you to an Android game. Hit play to start the game and the back button to exit.
The purpose of the game is to go through a series of obstacles and figure out how to make the Android figure jump between those obstacles. It's somewhat difficult to control, but be patient. I've only tried with my phone, but it may work with other models.
If it works, don't forget to hit the Kudos button.