The center of the Internet has moved South. Carter Horney of Forward Concepts has just published a Global 4G analysis with a detailed geographical breakdown. His projection for 2018 is 315M smartphone Internet users in India and 317M Africans connected. The U.S. population is 315M, some of them under 4 years old and not connecting to the net. His estimate is close to the 300M in 2017 I projected with Cisco's help http://bit.ly/Africa300M last year.
These estimates are very rough but the trend is clear. Both India and Africa have over a billion people. $50 smartphones are affordable to hundreds of millions more than are connected today. Carlos Slim told me two years ago that $50 smartphones will connect two billion more people. He's proving right.