IPhone and Samsung Smartphone. Sales worldwide between 2011 Q1 and 2015 Q4

In the last period, 2015 Q4, the largest presented item is Samsung Smartphone with Sales Amount of 81M. The fastest growing participant in our report is Samsung Smartphone with 604.35% growth in Sales Amount over 20 quarters between 2011 Q1 to 2015 Q4. The slowest growing topic is IPhone with 360.73% growth over the same period. This report represents data points consolidated from 4 sources: Apple, IDC, Gartner and Strategy Analytics