What is this even for

[BigUpKhaled]

There's this button that I've seen appear recently but when I press it, it doesn't do anything, I can't find anything online about it

(app icon is the battery guardian app)

[JAMES4578]

@BigUpKhaled Seems that Screen Curtain  should turns off the display whilst the app for instance video/game keeps running.   However  a few in Indian Community/other forums said it was not working.

[sarasphotobox]

I also got this aswell weird not sure what's the purpose

[MontyS23U]

https://chrome.google.com/webstore/detail/screen-curtain/iimkennknidfkjgokaeegjpohghkdgba

[Neo001]

The icon was released/made available as part of the latest Good Lock update for One UI 5.1.1. The actual functionality is not available yet.