According to fresh report coming from analytics firm Fiksu, a few good days after iOS 8 has been out in the wild, it still can't match the adoption rates of the previous, iOS 7 operating system.
After twelve days, both iOS 6 and iOS 7 had crossed the 50% mark for iOS usage, but iOS 8 is yet to hit the 40% mark, according to Fiksu’s measurements. Mixpanel's research also says iOS 8 is closer to 50%, but it is still far behind iOS 7’s rate of uptake.
It's good to know, though, that iOS 8 is ahead of iOS 5 in terms of usage, but that was expected, since iOS 4 users looking to upgrade to iOS 5 had to plug in to iTunes to update.
The report didn't specify how many iOS 8 users are iPad owners and how many own an iPhone. But what's worth pointing out is that iPhone 6 adoption is record-setting. 17 days since release, the iPhone 6 has touched the 4% level, whereas the combined share of the iPhone 5s and iPhone 5c was about 3% in the same period.