This graphic shows the market share held by Apple's iOS in the global smartphone OS market from 2011 to 2018. In the first quarter of 2018, Apple had a global smartphone OS market share of 15.6%.
Apple’s iOS - additional information
Prior to the launch of Apple’s iPhone in 2007, smartphones were a rather niche product and had not yet attained mass appeal. At the time, the most popular smartphone operating system was Symbian, with a 63% market share, largely due to its compatibility with Nokia products. In the ranking of OS market leaders, Symbian was followed by Microsoft Windows Mobile and RIM (Research in Motion), the operating system of Blackberry smartphones.
