Push Notifications, Mediacontrol with locker screen…

Guys like you see privacy as a monolith, that it never is. Unusable privacy is meanigless as email had shown. Privacy of communications does not mean privacy of communicators and usable authentication can be more important then anonymity.

And all this has to be realised on real-world servers, that are always in reach of real world goverment.

The KDE for windows software as a whole is pretty good.

I use KDEConnect to combine phone and windows. It although makes changing between OS a lot more fluid.