In the last period, 2014 Q4, the largest presented item is IPhone with Sales Amount of 74.5M. The fastest growing participant in our report is IPhone with 120.43% growth in Sales Amount over 6 quarters between 2013 Q3 to 2014 Q4. The topic that suffers from the biggest downturn is Samsung Smartphone with 7.41% decline over the same period. This report represents data points consolidated from 3 sources: Gartner, Apple and Strategy Analytics