StarTAC

Motorola's StarTAC is the 6th greatest gadget of the past 50 yrs. It was the first stylish phone which made people carry a cellphone easily and still look jazzy. It had the vibrator option for the first time too. But since then I don't know how Motorola could lose their Numero Uno position to another cellphone maker.

Source:
The 50 Greatest Gadgets of the Past 50 Years