If your device has been struggling with bugs and/or performance issues, think about giving the iOS 15.5 update a shot.
iOS 15.5 has just one bug fix on board. The software fixes an issue where home automations, triggered by people arriving or leaving, may fail. If you've been dealing with that issue, install the software immediately.
New versions of iOS often fix unlisted issues as well. The iOS 15.5 update could fix performance issues like abnormal battery drain, busted Wi-Fi connectivity, UI lag, Bluetooth problems, random reboots, lockups and freezes, and various issues with first-party applications.
If you missed older versions of iOS, you'll get the bug fixes from those updates with your upgrade.
iOS 15.4.1 brought several bug fixes for lingering iOS 15 problems. Here's the full list of fixes that were on board the firmware.
- Fixed an issue where battery may drain more quickly than expected after updating to iOS 15.4.
- Fixed an issue where braille devices may become unresponsive while navigating text or displaying an alert.
- Fixed an issue where Made for iPhone hearing devices may lose connection within some third-party apps.
iOS 15.4 had several important bug fixes on board including:
- Fixed an issue where the keyboard may insert period between typed numbers.
- Fixed an issue where News widgets in Today View may not open articles when tapped.
- Fixed an issue where Photos and videos may not sync to iCloud Photo Library.
- Fixed an issue where Speak Screen Accessibility feature may quit unexpectedly within the Books app.
- Fixed an issue where Live Listen may not turn off when switched off in Control Center.
iOS 15.3.1 fixed an issue that may cause Braille displays to stop responding. If you use this feature, and you missed iOS 15.4.1, iOS 15.4 and iOS 15.3.1, you should install iOS 15.5 right now.
If you missed iOS 15.3, you'll get its fixes as well. iOS 15.3 patched up an issue with Safari that leaked users browsing history and Google ID, an issue that was first discovered by FingerprintJS.
According to MacRumors, iOS 15.3 also fixed an issue where HomeKit camera thumbnails were failing to refresh within the Home application.
iOS 15.2.1 had two bug fixes on board. If you've been dealing with either of the following problems, and you skipped iOS 15.2.1, you'll probably want to install iOS 15.5.
- Fixed an issue where Messages may not load photos sent using an iCloud Link.
- Fixed an issue where third-party CarPlay apps may not respond to input.
If you missed iOS 15.2, it had six prominent bug fixes on board:
- Fixed an issue where Siri may not respond while VoiceOver is running and iPhone is locked.
- Fixed an issue where ProRAW photos may appear overexposed when viewing in third-party photo editing apps.
- Fixed an issue where HomeKit scenes that include a garage door may not run from CarPlay when your iPhone is locked.
- Fixed an issue where CarPlay may not update Now Playing information for certain apps.
- Fixed an issue where video streaming apps may not load content on iPhone 13 models.
- Fixed an issue where Calendar events may appear on the wrong day for Microsoft Exchange users.
Apple says iOS 15.1.1 improved call drop performance on iPhone 12 and iPhone 13 models. So if you were having issues with dropped calls on iOS 15.1 or older, and you skipped iOS 15.1.1, you should probably install iOS 15.5.
If you missed iOS 15.1, you'll get its fixes with your upgrade as well. Fixes on board the iOS 15.1 update included:
- Fixed an issue where the Photos app may incorrectly report storage is full when importing photos and videos.
- Fixed an issue where the Weather app may not show current temperature for My Location, and may display colors of animated backgrounds incorrectly.
- Fixed an issue where Audio playing from an app may pause when locking the screen.
- Fixed an issue where Wallet may unexpectedly quit when using VoiceOver with multiple passes.
- Fixed an issue where available Wi-Fi networks may not be detected.
- Battery algorithms updated on iPhone 12 models to better estimate battery capacity over time.
If you skipped iOS 15.0.2, you'll get its fixes with your upgrade. Here's what iOS 15.0.2 fixed:
- Fixed an issue where photos saved to your library from Messages could be deleted after removing the associated thread or message.
- Fixed an issue where the iPhone Leather Wallet with MagSafe may not connect to Find My.
- Fixed an issue where an AirTag might not appear in the Find My Items tab.
- Fixed an issue where CarPlay may fail to open audio apps or disconnect during playback.
- Fixed an issue where device restore or update may fail when using Finder or iTunes for iPhone 13 models.
If you skipped iOS 15.4.1, iOS 15.4, iOS 15.3.1, iOS 15.3, iOS 15.2.1, iOS 15.2, iOS 15.1.1, iOS 15.1, iOS 15.0.2 and iOS 15.0.1, you'll get iOS 15.0.1's fixes with your upgrade. Here's what iOS 15.0.1 fixed:
- Fixed an issue where Unlock iPhone with Apple Watch may not work on iPhone 13 models.
- Fixed an issue where the Settings app may incorrectly display an alert that storage is full.
- Fixed an issue where audio meditations could unexpectedly start a workout on Apple Watch for some Fitness+ subscribers.
If you skipped an iOS 14 update, you will get the bug fixes from any updates you skipped with your version of iOS 15.5. Again, the fixes from the update(s) you skipped are baked into your upgrade.
For more about iOS 14's various bug fixes, take a look at our guide.