Apple Reveals How Many iPhones Were Running iOS 26 Before WWDC

Apple has shared updated iOS 26 and iPadOS 26 adoption figures, revealing how many iPhones and iPads were running those software versions on the day before the start of WWDC 2026 and the release of the first iOS 27 developer beta.

These adoption numbers are based on iPhones and iPads that transacted on the App Store on Sunday, June 7, according to Apple.

The statistics are as follows:

• 86% of all iPhones introduced in the last four years were running iOS 26.
• 79% of all iPhones were running iOS 26.
• 79% of all iPads introduced in the last four years were running iPadOS 26.
• 68% of all iPads were running iPadOS 26.

Here is how that compares to the iOS 18 adoption figures that Apple shared based on iPhones and iPads that transacted on the App Store on Thursday, June 5, 2025:

• 88% of all iPhones introduced in the last four years were running iOS 18.
• 82% of all iPhones were running iOS 18.
• 81% of all iPads introduced in the last four years were running iPadOS 18.
• 71% of all iPads were running iPadOS 18.

iOS 27 beta testing is now underway, so this will be Apple's final update on iOS 26 adoption.