FWIW, I had an iPhone for 2 years or so. I probably made about 20 voice calls on it. I don't know it that's typical or not, but I agree - less people use the phone these days.

On my Nexus one, I can sms, GTalk, facebook, email etc etc far easier than voice calling someone and waffling around to a point and interrupting them.

I think low end cameras are doomed whatever. Same with mp3 players.