the device in the first image is doable, and already looks like the dell pocket PC that was being made back in early 2000, just stick a bulky camera onto it and make it like a clamshell phone with the keyboard embedded into the lid with an obstructive handle on the side, but how the fuck are you supposed to use that keyboard?
the navi would just be bonzi buddy most likely
that being said, it would still be better than seeing fucking smartphones everywhere