https://wccftech.com/ios-11-is-installed-on-81-of-total-iphone-ipad-and-ipod-touch-devices-out-there/

Apart from the usual announcements, Apple revealed some interesting numbers pertaining to iOS 11 as well.

Apple kicked off its opening WWDC 2018 keynote with a bunch of stats and the one that caught our eye the most is that iOS 11 is installed on 81% of devices out there. To put things into perspective how amazing that number is: there are more than a billion iOS devices currently in use around the globe.