Re: @zax

The "smart" part is not about UI design or any other interface design. Smart basically referred to the ability to install extra native software or extend the functionality of the device through software.

Dumbphones have a limited feature set that can't be improved through third party software.

Window Mobile came out of PocketPC which was providing a pocketable version of Windows in the mid 1990s. All Microsoft did was add a phone at a later date.