A video with the change in shares according to StatCounter was published on Reddit by the user PieChartPirate. You can see how the share of mobile operating systems changed in the market from 2007 to 2021: first, the SymbianOS platform from Nokia was in the lead, followed by BlackBerry, Windows Mobile and others.
By June 2021, the market was almost completely divided by Android and iOS with shares of 72% and 27%, respectively.