Install iOS 12.3.2/iOS 12.3.1 for These Other Changes
The iOS 12.3.2/iOS 12.3.1 updates don't come with any new features, but if you skipped previous versions, you'll get some smaller changes with your upgrade.
If you skipped iOS 12.3, you'll get some smaller changes that might be of some use to you. They include:
If you skipped iOS 12.2, you'll get some additional changes with your iOS 12.3.2/iOS 12.3.1 update. These include:
Apple's improved the quality of the audio messages sent in the Messages app in iOS 12.2. The company switched to a new Opus codec at 24000 Hz.
With iOS 12.2/iOS 12.3/iOS 12.3.1/iOS 12.3.2 on board, .CAF files will also sound a lot better.