Apple rolls out iOS 11.0.1 to improve the performance.
The first software update to iOS 11 is now available for downloads. Version 11.0.1 appears as build 15A402/3, bringing some under the hood improvements and fixes. There aren’t new features in this release, as these updates usually polish the software and fix some widespread issues like problems with the battery.
Several problems with iOS 11 have already been reported by users, like the reduced battery life and the bad audio quality from the earpiece on iPhone 8.
If you have previously installed a beta version of iOS 11 through the public test program, you won’t receive this update. To install iOS 11.0.1 you have to remove the beta profile from Settings → General → Profiles.