I'm not sure I can give you a percentage, but I think we do have to remember that people are social beings and we still need to interact with other people. One of the most effective things I have seen in workplace health is that somebody decides that they're going to go for a walk at noon, and they get other people to go out for a walk, but people wouldn't necessarily do it on their own.
You have to get people to work together on some of these issues. It's not only the smart phones that are going to be the answer to all of our potential ills.