That form factor running clean, stock Android with cellular connection, phone calls and all. Graphic linux running alongside with simple hotkey screen switch.

That form factor running clean, stock Android with cellular connection, phone calls and all. Graphic linux running alongside with simple hotkey screen switch. Linux doesn't have to be integrated with Android at all other than being provided cellular data and access to the I/O devices. That way you get the best of both worlds. Android apps, but with a real keyboard for all that text input. And push a button and you have an always on, always interconnected pocket Linux machine. This respects that 99% of the use would be as a bulky smartphone, but when it comes to that 1% - which for me mostly translates to ssh-ing somewhere, be it via Termux or Connectbot - that keyboard sure would be handy.