See more: How to take a screenshot on Android
Go to the screen which you need to take a screenshot, then hold down both the Power and Volume down button for a few seconds ( 3s+ ). You will here hear the camera shutter sound immediately.
You can see the image by tapping on Photos app >> Screenshots.
Or you also tap on the Notification
Tap on it to open and share it with your friend or share to Facebook, Snapchat,…