Of course you can build a waterproof smartphone with screws (except the screen has to be bonded to the glass for capacitive touch to work and the glass to the frame so there’s still some glueing involved), but it would probably have 1cm bezels around the screen.
> the screen has to be bonded to the glass for capacitive touch to work and the glass to the frame so there’s still some glueing involved
Why? That might make alignment easier, but I don't think the screen plays any role in the touchscreen digitiser working. I've even seen videos of them still working when separated from the display.
