Comment by toast0

I never used it, but Microsoft's Continuum [1], was supposed to scratch that itch too. Your phone could drive a desktop experience when you connected (wired or wireless) to a docking station (I saw a laptop shaped dock which might have been a prototype), and with the proper implementation of UWP apps (which didn't really happen, afaik) you could interact with your apps/data equally in desktop and mobile. Didn't let you run win32 apps though, which makes it kind of limiting, but if all you do is browser, messenger(s), and office suite, it could have worked pretty well. I think this would have worked better with Intel's x86 phone cpus, but those were cancelled days before the Continuum reveal, and Microsoft also did a really poor job on WM10, so nobody knows about any of this.

[1] https://en.wikipedia.org/wiki/Windows_Continuum