http://www.pewglobal.org/2015/03/19/1-communications-technology-in-emerging-and-developing-nations/ http://www.pewglobal.org/2015/03/19/1-communications-technol

http://www.pewglobal.org/2015/03/19/1-communications-technology-in-emerging-and-developing-nations/ http://www.pewglobal.org/2015/03/19/1-communications-technol... Smart-phone may not be the mobile target you're thinking of here.