There are about 5.3bn people on earth aged over 15. Of these, around 5bn have a mobile phone and 4bn a smartphone. The platform wars ended a long time ago, and Apple and Google both won (outside China, at least). So it is time to stop making charts.
5bn people have a mobile phone now, and 4bn have a smartphone. This interesting post details usage as well as it draws a perspective with the PC market. And concludes it is time to stop making charts.