I've noticed a lot of people tend to refer to them by the device type, 'have you seen my iPhone/Blackberry/Android' etc. But I think the concept of a 'phone' has evolved and the meaning of the word is changing/has changed. I don't hear people say 'smart phone' vs 'phone' anymore, but 'phone' vs 'feature phone'. Obviously I'm rather ignoring landlines...
That exactly my point, we could easily just start using the word 'phone' to refer to all pocket sized computing devices.
It would be anachronistic.
I've started to refer to my Galaxy S2, which has just a data plan card in it, as my "pocket computer". ;-)
I also really hate the term "smartphone", which I probably should have mentioned.