iOS 12.1.3 includes bug fixes for your iPhone or iPad.
Fixes an issue in Messages that could impact scrolling through photos in the Details view Addresses an issue where photos could have striped artifacts after being sent from the Share Sheet
Fixes an issue that may cause audio distortion when using external audio input devices on iPad Pro (2018)
Resolves an issue that could cause certain CarPlay systems to disconnect from iPhone XR, iPhone XS, and iPhone XS Max
HomePod iOS 12.1.3 release notes:
This update includes general improvements for stability and quality.
Fixes an issue that could cause HomePod to restart
Addresses an issue that could cause Siri to stop listening
tvOS 12.1.2 and macOS 10.14.3 are also now available with security, stability and compatibility improvements: