Open the desired screen that you want to take a picture;
Simultaneously press Volume Down and Power buttons to take a screenshot;
In a second edge of the screen will flash, confirming the creation of the screenshot. You will hear a distinctive sound pictures.
Now, take a screenshot you will find in Gallery (Gallery) or My Files (My Files).
Method 2: To Make Screenshot on Mi A2From the menu
The screenshot with the menu option is one of the simplest process to take screenshot.
This menu option is not available for all Android phones, apart from Xiaomi Mi A2.
1. First select any screen that you like to take screenshot.
2. Now drag the notification bar down and find Toggles.
3. Next you must locate the screen icon.
4. Simply click on the icon to take screenshot. For the above are the two simple methods to take screenshot on Xiaomi Mi A2.