For an alternative data source, Statista provides Mobile OS market share going back a little over a decade: https://www.statista.com/statistics/272698/global-m

For an alternative data source, Statista provides Mobile OS market share going back a little over a decade: https://www.statista.com/statistics/272698/global-market-share-held-by-mobile-operating-systems-since-2009/ https://www.statista.com/statistics/272698/global-market-sha... (this is based on web traffic measured by StatCounter)