The company says iOS 8 adoption reached 46% on September 21, 2014. 49% of users are still using iOS 7 and 5% of users are on earlier firmware versions.
This level exceeds previous estimates and is impressive considering iOS 8 was just released on September 17th. Before the release, iOS 7 adoption was over 90%.
If you haven't already updated yet, you can find more details on how to update to iOS 8 here.
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