[zelphirkalt]

I think there is a GNU/Linux distro which can do that. Not sure whether it was KDE Neon or some feature of Framework laptops or another one, but they had a video where they plugged the phone onto a screen and were aber to use both.

[sumuyuda]

https://maruos.com/

[oynqr]

Isn't KDE Neon desktop only? For phones, postmarketOS and Mobian would be the ones I think of.