There are 2 simple ways to take a screenshot in any android mobile phone. These are some more tips regarding android mobile & Laptop. check the details I have listed below.

Vivo phone

Just Press Volume Download + Power Button In Same Time.

HTC phones

HTC U12+: Press and hold the power button until your phone vibrates, and then tap the virtual home button on the navigation bar while still pressing the power button.

HTC U series (up to U12+): Hold down the power and volume-down buttons for a couple of seconds.

HTC 10: Hold down the home and power buttons OR hold down the power and volume-down buttons for a couple of seconds.

All other HTC phones: Hold down the power and volume-down buttons for a couple of seconds to take screenshot.

Huawei and Honor phones

Hold down the power and volume-down buttons for a couple of seconds.
Pull down the notification panel, switch to Shortcuts, and tap the Screenshot icon.

Lenovo

Hold down the power and volume-down buttons for a couple of seconds.
Pull down the notification panel and tap the Screen Shot icon.

LG phones

LG G7: Press and hold the power and volume-down buttons for a couple of seconds.

All other LG phones: Hold down the power (located on the back of the phone) and volume-down buttons for a couple of seconds. Pull down the notification panel and tap the Capture+ icon.

Motorola phones

Hold down the power and volume-down buttons for a couple of seconds.

OnePlus phones

All OnePlus phones: Press and hold the power and volume-down buttons for a couple of seconds.
OnePlus 5, 5T, and 6: Swipe down with three fingers on the home screen.

Samsung phones

Galaxy S8 and later: Hold down the power and volume-down buttons for a couple of seconds.

Galaxy S7 and earlier: Hold down the home and power buttons for a couple of seconds.

Sony phones

Hold down the power and volume-down buttons for a couple of seconds.
Hold down the power key until a screen appears and tap Take a screenshot.

ZTE phones

Hold down the power and volume-down buttons for a couple of seconds.

Acer phones

Hold down the power and volume-down buttons for a couple of seconds.
Pull down the notification panel to reach quick settings and tap the Screenshot icon.

Asus phones

Hold down the power and volume-down buttons for a couple of seconds.
Pull down the notification panel to reach quick settings and tap the Screenshot icon.

Google phones

Nexus: Hold down the power and volume-down buttons for a couple of seconds.
Pixels: Hold down the power and volume-down buttons for a couple of seconds.




If the above methods are not working for you then you can use this simple application to take a screenshot in your android mobile.

Screenshot

Name Of The App - Screenshot touch.

Screen shot touch application

Details

Screenshots Touch supports Android 5.0 Lollipop or higher.

[Infrastructure]

Capture by Touch (Notification Area, Overlay Icon, Shaking Device)
• Record Video Cast for MP4 with option (resolution, frame rate, bit rate, audio)
• Web page full scrolling capture (with an in-app web browser)
• There are two ways to scroll capture. Sharing a URL in a web browser and selecting Screenshots Touch. Second is to call the in-app browser directly by pressing the globe icon on the settings page.
• Photo Viewer
• Image Cropper (crop ratio, rotate)
• Captured image (pen, text, rectangle, circle, stamp, opacity and so on)
• Share screenshots for other installed applications (user controlled)

[Dynamic features]

• Select Capture Options (Save directory, Optional Subfolders, File formats, JPEG Quality, CaptureDelete, and so on)
• Permanent Notification (Optional): This notification always permits to be present which can not be removed. This screenshot accelerates touch's access.
Multiple Savings Folders: This allows you to create subfolders in a graded way to group your screenshots. This helps especially when avoiding a series of screenshots of different screen activities that are saved, then avoid using the file manager. for example; You can not match your Facebook screenshot in the same folder with a screenshot of your favorite app, game or home screen.