How to take screenshot

[Dharamit]

How to take gesture based screenshot in note20 ultra

[DarshanChatterjee]

Using palm

[Ayush-7]

Palm swipe

[Gourav_Sen]

Swipe your palm from left to right or right to left

[Sidhabhi]

https://r2.community.samsung.com/t5/Galaxy-S/ALL-ABOUT-ONE-HAND-OPERATION/td-p/7016114

https://r2.community.samsung.com/t5/Galaxy-S/HOW-TO-TAKE-A-SCREENSHOT-GALAXY-DEVICES/td-p/6876357

Check my above posts