The Motorola RAZR
The snap shut at the end of a call.
A flip phone thin enough to be a fashion object, sold on looks rather than function.
Ending a call by snapping it shut was unbeatable and no touchscreen has ever replicated it.
The keypad was etched metal, cold to the touch, and the software was genuinely awful. Nobody cared.
Cost back then
£250
Goes for now
£40–£200