Just read the article and I'm sorry, but it's very silly to go from this article to the conclusion that we should all ditch smartphones.
One successful businessman prefers talking on the phone to texting. Well, that's great. What makes him an authority on communication, or even communication in business? What about the CEO of an equally successful business person who hates taking on the phone and conducts most interactions on email or by text? Why should I listen to one over the other? Why should we all be constrained to one mode of communication?
And the story about the kid who texted during the meeting? Well, that's just rudeness, and that fault belongs to the person, not the phone. If one wants to make the case that smartphones make it easier for people to be rude in more situations, then fair enough, but that argument is not advanced by this article with its one anecdote offered by one businessman who, quite frankly, sounds like a bit of a blowhard.
The trick, as with many many other things, is to simply pay attention, both to social conventions and to the preferences of the person with whom you are doing business.
And as I've already said, it's bullshite to say that one can't convey meaning or emotion in a text. He's essentially saying that one cannot communicate through the written word. And why does he need to convey passion in a text anyway? He's conducting business, not composing an ode to a sunset.