In the last period, Y2015, the largest presented item is Android with Sales Amount of 1.25B. The fastest growing participant in our report is Android with 149.04% growth in Sales Amount over 4 years between Y2012 to Y2015. The topic that suffers from the biggest downturn is RIM OS with 69.36% decline over the same period. This report represents data points consolidated from 2 sources: Gartner and IDC