No that's not what he is saying.
Consider that one person has two, three, or four smartphones in his possession (I have seen some with five!).
That means while there could be one billion smartphones in the world, there could be just 600-700 million unique people using them instead of one billion unique humans.
It is an estimate, but the estimate is that 1 billion people have smartphones.
"We estimate 1 in 7 of the worlds population owned a smartphone in the third quarter of 2012. "
http://blogs.strategyanalytics.com/...one-Population-Tops-1-Billion-in-Q3-2012.aspx