Too Long; Didn't Read
Android is the most popular mobile operating system now with more than 76% market share. This has, in part, been possible due to its open nature and the multiple vendors which ship Android on their devices. But it also has huge problems in terms of fragmentation. For e.g Android Oreo was released in August 2017 and iOS 11 was released in September 2017, Oreo has 14.2% market adoption and iOS 11 has 85% even though Oreo had a headstart. To get to 85% adoption, you need to target <a href="https://hackernoon.com/tagged/android" target="_blank">Android</a> Kitkat which was released in Oct 2013. Though this is only the tip of the iceberg.