Take screenshot without apps

Hello everyone. Welcome to my technology blog.

Today I am writting about how to take a screenshot without apps. We use many apps for take good screenshot. But these apps have many functions, they takes some mb of your storage and they are costly for downloading. But all Android mobile phone set have a functions for screenshot which is given with your phone. I am using Walton phone. So I show a tricks.

In your Android 1st click power button and then click volume down (-) button. With this yiu can take a good screenshot.
I give some example. Just see.