Matthew Panzarino, writing for The Next Web:

In a Neilsen survey from earlier this year it was shown that almost no respondents stopped using their smartphones after purchasing a tablet, while 3% completely stopped using their desktop computers and 32% reported that they were using their desktops much less. Consumers treat phones and tablets as separate entities, they look at them as different tools for different purposes. He goes on to discuss many other points, in a well written piece that does a very good job of laying it all out.