iPhone X iOS 12.3.1: What's New
If you're moving from iOS 12.3 to iOS 12.3.1 you get three bug fixes with your upgrade. For more on those, please take a look at our walkthrough.
Moving from iOS 12.2 to iOS 12.3.1? You get 23 security patches, bug fixes, improvements to AirPlay 2, and Apple TV app upgrades. These are from iOS 12.3.
If you want to know more, please take a look at our guide to the iOS 12.3 update. It'll take you through everything you should know.
If you're moving your iPhone X from iOS 12.1.4 to iOS 12.3.1 you get iOS 12.2's changes with your update. These changes include support for AirPods 2, improvements to Apple News, AirPlay, Apple Music, Screen Time, and Safari, and a bunch of bug fixes and security patches.
For more about iOS 12.2's changes, take a look at our walkthrough.
If you're moving your iPhone X from iOS 12.1.3 to iOS 12.3.1 you get four additional patches with your update.
Apple's iOS 12.1.4 update patched up an eavesdropping FaceTime bug that allowed you to hear sound coming from another person's phone before that person picked up.
The company permanently disabled Group FaceTime on iOS 12.1, iOS 12.1.1, iOS 12.1.2, and iOS 12.1.3 which you need to upgrade to iOS 12.1.4/iOS 12.2/iOS 12.3/iOS 12.3.1 if you want to continue using the feature.
If you're moving from iOS 12.1.2 to iOS 12.3.1 you get some bug fixes with your update.
iOS 12.1.3 included a fix for an issue in Messages that could impact scrolling through photos in the Details view. It also had a fix for an issue where photos could have striped artifacts after being sent from the Share Sheet.
If you're moving from iOS 12.1 to iOS 12.3.1, your update is a lot bigger thanks to iOS 12.1.1.
The iPhone X's iOS 12.1.1 update focused on fixing lingering iOS 12 bugs though it also delivered improvements for dictation and VoiceOver along with a few other enhancements.
If you're curious about the contents of Apple's iOS 12.1.1 update, please take a look at our walkthrough. It goes over them in detail.
If you skipped iOS 12.1, you'll get its contents with your version of iOS 12.3.1.
The iPhone X's iOS 12.1 update featured major changes including new emoji characters, Group FaceTime calls, and a variety of bug fixes and enhancements. For more on iOS 12.1's features and fixes, take a peek at our guide.
If you're moving your iPhone X from iOS 12.0 to iOS 12.3.1, your update comes with some additional security patches thanks to iOS 12.0.1.
The iOS 12.0.1 update delivered two patches for potential lock screen exploits and it also brought a fix for an annoying Bluetooth problem.
If you're moving from iOS 11 to iOS 12.3.1 your update is far more substantial thanks to iOS 12.0.
Thanks to its age, the iPhone X got a robust version of iOS 12. iOS 12's feature set is limited on older phones like the iPhone 5s.
iOS 12 comes with a ton of changes and the highlights include Screen Time, improvements to Do Not Disturb, Siri Suggestions for Shortcuts, upgrades for Apple Music and Apple News, and a new Measurement app that takes advantage of ARKit.
If you're unfamiliar with the feature on board iOS 12, you'll want to take a look at our iOS 12 vs. iOS 11 walkthrough. It'll walk you through the major differences between the two operating systems.
If you skipped an iOS 11 update, the changes from those updates are baked into your version of iOS 12. If you aren't caught up on iOS 11.4.1 and older versions of iOS 11, be sure you take a look at our guide to the iOS 11 update.