Cellphones getting smarter

Cellphones are getting smaller and smaller but also getting smarter, while adding features which were previously only found on smartphones - To Do Lists, Calendars with appointments, synchronization with PCs, World Clocks, email and now playing MP3 Music files.

According to this Wikipedia definition, a smartphone is "any electronic handheld device that integrates the functionality of a mobile phone, personal digital assistant (PDA) or other information appliance."

However, in the same article, they go on to say "It is increasingly difficult to define exactly what qualifies as a 'smartphone'. Nearly all new mobile phones have some rudimentary PDA functionality such as phonebooks, calendars, and task list"

Even an assumption that a smartphone should have a keyboard can be wrong. Take the case of the Nokia 6810:



When opened it has a full QWERTY keyboard, interesting:



It is not a smartphone, but instead is a text messaging phone.

Then there is the Motorola MPx200:



No keyboard, but it runs Windows Mobile 2002, and is therefore a smartphone (see Wikipedia's article)

I'm sure there are other, better and more up to date examples, but I couldn't think of any. Maybe Engadget Mobile will help me.

By the way, thanks to the General for pointing out Engadget Mobile, which surely must be the mother of all Mobile Technology sites.