Apple released iOS 11 in September and since then there have been two operating system updates.
The latest update aims to fix significant system issues. To download and install the update, you need to go to Settings – General – Software Update, and then follow the instructions on the screen.
The main goal of the new version was to fix two problems. The first is non-working unofficial displays on iPhone 6s. The second is the audio and vibration feedback errors on iPhone 7 and iPhone 7 Plus.
'Fixed issue with audio and vibration feedback not working on some iPhone 7 and iPhone 7 Plus.
Also fixed an issue with the displays of some iPhone 6s that have been replaced by unofficial organizations'.
Update iOS 11.0.3 is already available for download. Also Apple is working on the next update iOS 11.1 with new emoji and the return of multitasking 3D Touch.
Previously, version iOS 11.0.2 was released, which fixed an issue with noise during calls on some models iPhone.