This app can usually be found in a folder labeled “Utilities.”, This will take you to the leveling screen., You will see two white bubbles on your screen. The degree of inclination will be at the center of the screen.

You can make the screen easier to see by tapping your screen once to make the background red.
 When the bubbles are aligned, that means the object you are measuring is in a level position. Your screen will turn green and the number at the center of your screen will be zero.
Open your Compass app.
Swipe left on the compass face.
Put your phone on a flat surface.
Line up the bubbles.
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