The OnePlus smartphone takes a screenshot by briefly pressing the Volume down and On/Off buttons simultaneously.

However, if we want another way to take a screenshot, we can enable the three-finger screenshot feature.

The Three-Finger screenshot gesture involves dragging three fingers from the top of the screen down to simply take a screenshot of the current screen content.

Android 10 | OxygenOS 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Buttons & gestures
Step 3:  Tap on  Quick   gestures
Step 4:  Enable or disable  Three-finger screenshot
  1. Open the Settings
  2. Tap on Buttons & gestures
  3. Tap on Quick gestures
  4. Enable or disable Three-finger screenshot