People are going all over trying to find the “sweet spot” for screen size for mobile devices. In use, the larger the screen the better, in carrying and energy consumption, the smaller the better.
We need a screen that expands/contracts! I can’t wait for flexible OLED screens, put a few sensors on it and you can fold and expose only a small part, or the whole thing and the OS responds and adjusts the display accordingly.
THAT would be slick!