Apple has released iOS 16.3 official version and iOS 15.7.3 version.
Apple has released iOS 16.3, the third major update to the iOS 16 operating system, first released in September 22.
Apple has also included an update to the official iOS 16.3 release that provides security improvements.
We also released iOS 16.7.3 for older iPhones, such as the iPhone 6.
This update introduces Security Keys for Apple ID, allowing physical two-factor authentication to replace the digital two-factor authentication used to sign in to Apple ID.