On most Android devices, you can take a screenshot by pressing the Volume down button and Power button simultaneously for a second or two, after which it is enough to select a specially selected item in the pop-up window.
On Samsung smartphones and tablets, the combination looks like this:
physical button Home + power button
On a Xiaomi phone
To take a screenshot, swipe down on the display using three fingers. You can customize this gesture from Settings > Additional settings > Button shortcuts > Take a screenshot and assign it to a long press of the Home, Menu, or Back button.
On a Motorola phone
Go to the app overview screen by swiping up and holding or pressing the square button, you’ll see a Screenshot button at the bottom. Tap the icon, and your phone takes a screenshot.
Where do I find screenshots after I take them?
1. Pictures will be saved in the path Pictures / Screenshots on the memory card or on the internal drive (there are exceptions).
2. Open the Photos app, and select Library at the bottom of the page. Look for the Screenshots album and tap on it to open.