What is the latest iOS version on iPhone and what issues it addressed?
The latest iOS for Apple iPhone is iOS 16.4.
 This has bought a lot of updates to the iPhone like:
 - It introduced a new set of emojis
 - latest security patch 
 - It introduced a voice isolation feature for iPhone, now people can not listen to background noise when they are on call
 - Now Cloud Shared Photo Library can also detect duplicate photos, this will save your storage
 - Crash detection is been optimised for iPhone 14 series phones
 - iCloud was unresponsive sometimes has been addressed
 - Now you can add notifications for web apps on the home screen itself.
 - Many more features are added