Apple pushed the official version of iOS 15.1.1 update (internal version number: 19B81) this morning, this update mainly improves iPhone 12 and iPhone 13 The call drop problem of the model .
According to Apple's official documentation, the content of this update is otherwise the same as the official version of iOS 15.1, and it is expected to only be pushed for iPhone 12 series and iPhone 13 series users.
Users of iPhone 12 series and iPhone 13 series can go to "Settings"> "General"> "Software Update" to download and install the update. You are welcome to contribute and tell us what new features are available.
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