Comment by danielEM

Why would you allow your phone to be a computer if you can sell a computer AND a phone? Allowing "random" OS to be installed on your phone would mean loosing control over your phone (including spying, gathering statistical data to influence major decisions, ability to paralyze communication of your country etc etc)

Android phones are nothing but linux phones and video output (DP over USB-C, earlier MHL) is for many years already included in many phones. I would love to carry one device with everything on it. I would be very happy if that device was like a laptop with detachable core, that acts as phone.