Apple today began rolling out the fourth beta of iOS 12.4 for testing on the iPhone and iPad. This comes two weeks after the third build was released. Both developers and public beta testers should get the new software this week.
The new software can be installed by going to Settings > General > Software Update. From there, you should see the latest beta ready to be downloaded. After making sure you’re connected to a Wi-Fi network and have enough battery life, go ahead and hit install.
iOS 12.4 will likely consist of bug fixes and security enhancements. It’ll also include the foundation of the software required for Apple Card compatibility which will be released later this year. Stay tuned, though, since we’ll be updating this article with any notable changes/features.