I had a smartphone but I threw it out.. Quite literally.
I felt SO disconnected with the world... all that mattered was what was next on my netflix queue, who said what on my facevook, and what's the next post for my twitter... It consumed me and the real world became a murky, podgey, I don't know what..
I dislike them for this purpose, but, I just took it to far, if you can moderate, awesome!:)