lock screen

[loviii]

please add a button to lock screen or add option double tap to lock the screen. A51 only have option double tap to wake up please add double tap to lock screen also. 

[Š]

Double tap to lock is part of One Ui 3.0
You can use Assistant menu now.
Accessibility > Interaction and dexterity >assistant menu

[Sidhabhi]

You can check my post on this

https://r2.community.samsung.com/t5/Galaxy-S/ALTERNATIVES-PHYSICAL-SCREEN-OFF-BUTTON/td-p/4451822

[CrazyBoy28]

🔥🔥

[Ehsank]

hopefully with Android 11 ui 3
but as of now you can use assistant menu