It took the latest version of Android several months to reach 12% adoption, but iOS 9 was able to do it in less than a day. Analytics firm Mixpane claims that iOS 9’s adoption rate is even faster than its predecessor’s, which CEO Suhail Doshi believes could be due to the fact that iOS 9 was the first version of Apple’s mobile operating system to have a consumer beta, which means people had plenty of time to familiarize themselves with the changes, not to mention that the update was much smaller than last year’s iOS 8 update.