KDE also can encode entries as QR codes, so you can make URLs transferable to your phone or whatnot.
-- Sent from my MacBook Air.
For KDE Connect, does the phone have to be an Android or ?
I found out that being able to let go of things relieves a lot of load over one's proverbial and literal shoulders.
https://hluk.github.io/CopyQ/
Either way, I think it is better to not copy passwords to the clipboard or the selection, but store and transfer them via password-manager/browser/etc APIs.