Earlier this week, on Tuesday Apple released the second update to iOS 11, since the main update was launched in the early part of September. iOS 11.0.1 was released around a week or so ago and just contained a few minor bug fixes and one for email issues with Microsoft Exchange.

However, with iOS 11.0.2, Apple has released a fix for the iPhone 8 as some users were reporting issues with audio crackling coming from the earpiece. As reported here, by iDownloadBlog.

Release Notes

• Fixes an issue where crackling sounds may occur during calls for a small number of iPhone 8 and 8 Plus devices
• Addresses an issue that could cause some photos to become hidden
• Fixes an issue where attachments in S/MIME encrypted emails would not open

iOS 11.0.2 can be downloaded over the air on the iPhone by going to Settings > General > Software Update