I suppose that one of these days I will upgrade my plain vanilla phone to something a bit more exotic and capable. I can see where being able to get real time weather radar while on long trips would be helpful, but that would be a passenger only function. But by that time likely the screens on these little devices will have played the one-upmanship game with increasing screen sizes such that I won't go blind looking at it for extended periods.
Other than that, nope, I don't want to get the incessant email notifications and other crap via such a device. Lord knows I get more than enough "I forgot my password" emails as it is just sitting here in my den without being bugged by that sort of nonsense while out and about.
Oh yeah, and it seems that some of the quadcopters that I've been looking at actually use smart phones as part of the controlling interface. This seems to be becoming more and more common, and I expect I will be dragged kicking and screaming into the fold (you WILL be assimilated!) sooner or later as household devices become controlled by such handheld devices more and more often. I expect that someday I'll be able to query the refrigerator from bed to see what is in there to make it worth getting out of bed for.
Of course, the rumors I've read about that such devices pretty much give government agencies free reign on looking in on ME using those devices certainly doesn't set well with me. But I doubt most people will hesitate to resist such surveillance if the other offered bells and whistles are attractive enough. Not that my life wouldn't just bore such observers absolutely to death. But still, sometimes when I drive one of the vettes, I sure would not like to think I had someone looking real close over my shoulder at the speedometer.....
GPS can determine speed, so it's not unreasonable to suppose that someday speeding tickets will be issued and mailed automatically in such a manner.