https://www.theregister.co.uk/2017/10/04/apple_ios_11_0_2/

Apple has pushed out a software update to address the handful of bugs that were nagging its latest iPhone models and flavor of iOS.

The iOS 11.0.2 release consists of a trio of fixes that were reported by fans shortly after the arrival of version 11.0 of the operating system and iPhone 8 and 8 Plus last month.