There are many ways to take a screenshot on the Realme C21 phone and a few more best tips tricks and cool hidden features to quickly get a screenshot:
Google Assistant
Use Capture+ icon at notification bar
Use buttons
Gesture
Use GooglePlay apps
We know you're clever. This is why there will be no instructions like select the screen you want to capture or turn on your phone. No nonsense. Only the necessary information how to make a screenshot on the Realme C21 phone.
Use buttons
Perhaps the easiest way to take a screenshot is to use the buttons. You can simultaneously press the Volume Down and Power buttons and hold them down until the screenshot is saved. You can use this method to make a scroll screenshot.
Click to zoom in
If the main way to take a screenshot not work and you can't find picture let's go further.
Use apps
You can can download and install special apps for screenshots which are very much in Google Play: Screen Master, Screenshot touch, Screenshot Pro, Private Screenshots, Screenshot Easy and more... All these apps have instructions on how to use them to make a screenshot and save the picture.
Google Assistant
The laziest way is to use Google Assistant. Just say OK Google and then Take a screenshot. The gadget will do all the work for you.
Click to zoom in
How do I share my screenshots? Depending on the Android version and the built-in shell, sending screenshots may differ. In new versions of Android (9 or 10), the smart menu will appear after you take a screenshot instantly. There you need to choose the appropriate icon for sharing. Or just open the gallery app on your phone.
Where do I find the screenshots I've taken? If you can't find the screenshots you took, don't despair. The places where the phone saves screenshots and regular photo may be different. Again, it all depends on custom shells. A pure Android throws pictures into the gallery (DCIM). Other shells can save screenshots to a separate folder for your comfort.
This is suitable for phones of all operators.
Verizon Wireless
Cricket Wireless
TracFone
Virgin mobile
Sprint
Simple Mobile
AT&T
Metro
T-Mobile
Your phone has a screen resolution 720 x 1600 pixels. So the screenshot will be the same size. The file will take up 0.1 megabytes of space in the memory of the phone or on the SD card.
The video or pictures in this post may not be your phone number. But, they have common parts that will help you get the required result.