"If you follow the data on
mobile vs desktop sales you’ll notice that not only will the installed base of mobile devices surpass desktop but it will almost 2x in two years."
This qualifies as a paradigm shift in computing. Smartphones and tablets are essentially different mediums with different habits and a whole new human–computer interaction science. In-fact many consumers —specially in emerging markets— are jumping directly to the use of a smartphone or tablet computer without buying or learning how to use a desktop PC.
There are more than 5 billion mobile phones in the world, with almost 4 billion feature phones and more than 1 billion smartphones. As smartphone prices come down, many people who currently have feature phones will be able to afford smartphones over the next 5 years.
This comes from the document explaining the internet.org initiative by Facebook. Which is something I’m really excited about, it would simply help balance out the economic differences in the world a little bit by getting the rest of the world online. If a success, this will cause an explosion in the smartphone and tablet installed base units.