iOS 27 reportedly available alongside iOS 26.7
A user lists update sizes of 20.39GB for iOS 27 and 1.04GB for iOS 26.7 on an iPhone 17 Pro Max, recommending 26.7 for those wary of possible app incompatibility or bugs.
TLDR
On September 14, 2026, a user said iOS 27 and iOS 26.7 were available to install. They recommended iOS 26.7 for people taking a wait-and-see approach, warning that apps might not be compatible with iOS 27 or that bugs could occur. For those eager to try iOS 27’s latest features, they advised stable Wi-Fi and plenty of time for the update, which they listed as 20.39GB on an iPhone 17 Pro Max.
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