Capturing images interchangeably called screenshot, screen captures, or screen grabs is just an everyday part of what we do. No matter what your platform, here is how to take a picture of what is on your screen.

But taking screenshots is not the norm for everyone. In fact, there may be some of you out there who are not even aware you can do it. But it is easy.If you need to take a screenshot (or 10), this is the tutorial you need. You get to know all that is needed about capturing screenshots, no matter the platform—Windows, macOS, ChromeOS, iOS, Android, and other mobile operating systems.

Most of the tips require nothing more than the operating system itself—they have all got built-in methods of capturing a screen. However, there are a lot of third-party software tools that will take your screen-grab game up a notch.

Smartphones

You probably take a lot of pictures with your smartphone, but you can also take a picture of what is already on the screen. The tools to do so are built right in.

Android

Google’s smartphone operating system, Android, has built-in screenshot options if you have Android 4.0 or later. Hold the power button and volume down for one or two seconds. The screen will flash white, and the image is saved to your photo gallery.

The problem is, that does not always work. Since Google does not have strict control over Android like Apple does over iOS, things can get weird. Try the Home and power buttons at the same time. If that does not work, then you need to go with an app . Google Play has way too many screenshot apps to count; some free, some paid. The top-rated one, is Screenshot Easy from Ice Cold Apps(www.icecoldapps.com) ; it comes in a free and paid edition for $1.99(N1000). It uses the same basic triggers as Android itself, or customise it and take a screenshot just by (for example) shaking your phone.

If you would like to take screens on a PC of what transpires on your Android device, check out Apowersoft’s Android Recorder(www.apowersoft.com) . It lets you cast what happens on a phone or tablet wirelessly to Windows or macOS for easy capture of not only stills but also video. It requires Android 5.0 or newer.

Android Wear

If you are into the Android-based wearables, good news: taking an image shot of the watch face is much easier than it used to be. But to do so, you don’t use the watch itself—you use the app on your Android device.

http://digitalclique.com.ng/take-a-screenshot-on-any-device/

This is a good thread.
I however find it easy to screenshot with my tecno phone because there is an option there for capturing

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