Apple has closed the verification channel for iOS 15.0.1 system, which means that users who have upgraded to iOS 15.0.2 or iOS 15.1 beta system can no longer downgrade to iOS 15.0.1 and earlier versions. iOS 15.0.1 was released on October 1, and it fixed a major bug that some iPhone 13 users reported that they could not cooperate with Apple Watch to achieve close unlocking.
In addition, it also solves the problem that the storage space is full in the settings of some iOS devices. Currently, Apple is intensively testing the iOS 15.1 system. The Candidate Version (RC) has been pushed for developers and Beta test members. The official version will arrive on October 25 and will be pushed for users of the official version.
iOS 15.1 unlocks the FaceTime sharing feature and will also activate the PreRes video encoding function of the iPhone 13 Pro/Pro Max.