My smartphone means I have instant access to a map that will have a shiny blue dot that means "you are here" at all times. And then I can ask "How do I get there?" and it can tell me. And if I get somewhere and realize I forgot to write something down, I can Google it. Or look up the email that had the information. Or I can text the person I'm meeting that I will be late, or maybe they can tell me where they are and I can meet them at the new location.

Basically, my smartphone gives me easy access to information at all times. That it's not useful for work is besides the point - it's useful when I'm doing things other than work.