There are 6 easy ways to take a screenshot on the Oppo K9s phone and a few more cool tips tricks and best hidden features to rapidly get a screenshot:
Install screenshot app from Google Play
Google Assistant
Built-in app
Screenshot Capture shortcut icon
Three fingers swipe on screen
Use buttons
We understand that you are clever. This is why there will be no teaching like select the screen you want to capture or switch on your device. No crap. Just the essential information how to make a screenshot on the Oppo K9s phone.
Use buttons
The easiest way to take a screenshot is to use the buttons. You can simultaneously press the Volume Down and Power buttons and keep them pressed until the screenshot is captured. You can use this method to screenshot with scroll.
Click to zoom in
If the main way to take a screenshot not work and you can't find image let's go further.
Use Capture icon
Another way is to use the built-in capabilities of the phone. Swipe down on the display and open the notification bar. Find the screenshot icon (shortcut) and tap on it to make a screenshot. It's done. You got the picture.
Long screenshot
To take a long screenshot, just tap on the relevant icon. It will appear after you have taken a usual screenshot. This method can also be called to make a scrolling screenshot.
Click to zoom in
Google Assistant
The slothful option is to use Google Assistant. Just say OK Google and then Take a screenshot. The gadget will do all the work for you.
Three-finger swipe
Swipe three fingers down the screen to get a screenshot. The location of swipe is not important. This method is applied in ColorOS.
Click to zoom in
Use apps
You can use special applications for screenshots which are very much in Google Play: Screenshot Pro, Screenshot Easy, Screen Master, Private Screenshots, Screenshot touch etc... All these apps have instructions on how to use them to make a screenshot and save the picture. How do I share my screenshots? Depending on the Android version and the custom UI, sending screenshots may differ. In new versions of Android (9 or 10), the quick actions menu will appear after you take a screenshot instantly. There you need to select the appropriate icon for sharing. Or just open the gallery app on your gadget.
Where are my screenshots? If you can't find the screenshots you took, don't lose heart. The folders where the gadget 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 different folder for your usability.
These methods work with phones of all operators.
Simple Mobile
Cricket Wireless
Verizon Wireless
Metro
Virgin mobile
AT&T
Sprint
TracFone
T-Mobile
Oppo K9s has a screen resolution 1080 x 2400 points. So the screenshot will be the same size. And the file size will be 0.3 MB, so calculate how much space you need in your phone's memory or on your SD card.
Some images or video from this post may not be your phone number. However, they have common parts that will help you get the desired result.