What’s New in iOS 16.3.1: Bug Fixes, Security Updates, and Performance Improvements

What’s New in iOS 16.3.1: Bug Fixes, Security Updates, and Performance Improvements

On February 13, 2023, Apple released iOS 16.3.1, along with updates for other operating systems including iPadOS, watchOS, Mac OS Ventura, HomePod OS, and TVOS. This update was available to all iOS 16 supported devices, from iPhone 8 and 8 Plus to iPhone 14 Pro and 14 Pro Max.

The update, which is primarily a bug fix release, addresses issues with iCloud backups, Siri’s ability to locate devices, and crash detection on the latest iPhone models. In this article, we will explore the new features and changes introduced in this update, as well as discuss the future of iOS updates.

Bug Fixes in iOS 16.3.1

One of the main focuses of the iOS 16.3.1 update was to fix various issues that were affecting the user experience. This included improvements to iCloud settings, Siri’s device location functionality, and crash detection on the latest iPhone models.

iCloud Settings Improvements

Many users had been reporting issues with iCloud backups, specifically with regards to the terms of service and other settings. This update resolves those issues, making iCloud settings responsive and displaying information correctly.

Siri Device Location Functionality

Another issue that has been resolved with this update is related to Siri’s ability to locate devices. Some users were experiencing issues with this functionality, as requests made to Siri to locate a device such as an iPhone or AirPods were not working properly. This update should resolve the issue for most users.

Crash Detection on Latest iPhone Models

Apple has also focused on improving the crash detection functionality on the latest iPhone models, including the iPhone 14, 14 Plus, 14 Pro, and 14 Pro Max. Users who do not want to use this feature can turn it off by going to Settings, then Emergency SOS, and selecting “Call after a severe crash.”

Security Updates

The iOS 16.3.1 update also includes security updates that address issues with kernel code and WebKit. The kernel is the underlying code for the operating system, and one of the issues that this update resolves is an “impact and app may be able to execute arbitrary code with kernel privileges.” Apple addressed this by fixing a use-after-free issue with improved memory management. The WebKit update relates to Safari and addresses issues that could allow malicious websites to execute code on a user’s device.

Future of iOS Updates

Apple typically releases a new version of iOS each year, with smaller bug fix updates in between. With the release of iOS 16.3.1, many are wondering what the future of iOS updates holds. It is likely that we will see a release of iOS 16.4 in the near future, potentially in March. This update is expected to include new features and improvements, as well as additional bug fixes.

In June, we can expect the release of iOS 17 in beta form for developers and beta testers. This release will likely include more significant changes and features, as well as improvements to performance and battery life.

Performance and Battery Life

One of the most critical factors for many iOS users is performance and battery life. It is still too early to determine if the iOS 16.3.1 update has had any significant impact on these areas, as it can take several days or even weeks to fully assess battery life improvements. However, initial benchmarks show that there have been improvements in performance.

Geekbench 5 tests show that the single-core score has increased slightly from iOS 16.3 to 16.3.1, which is a positive sign. However, it is important to note that individual user experiences may vary. It will take some time to see if there are any significant improvements in battery life and performance.

Geekbench 5 tests
Geekbench 5 Test

Other Fixes and Changes

In addition to the bug fixes and security updates, there are some other changes and improvements that users can expect with the iOS 16.3.1 update. For example, some users were experiencing lag when swiping home while in the Music app. This update is expected to address this issue.

There were also some connectivity issues, such as problems with Bluetooth and Wi-Fi, which should be resolved with this update. The AirPods widget has also been fixed for some users who were experiencing issues.

It is important to note that the iOS 16.3.1 update is primarily a bug fix release, which means that users should not expect any major new features. However, it is still a critical update as it addresses several issues that were affecting the user experience.

Downloading iOS 16.3.1

Users can download iOS 16.3.1 by going to Settings, then General, then Software Update. The update will be available for all iOS 16-supported devices. If you have a beta profile installed, the update may appear in different sizes, with the size being larger if you have the beta profile installed.


Overall, the iOS 16.3.1 update is an essential release that addresses several issues that were affecting the user experience. While it is still too early to assess its impact on battery life and performance, initial benchmarks show some improvements in performance. The future of iOS updates looks promising, with iOS 16.4 expected to release soon, and iOS 17 beta releasing in June. As always, users should keep their devices up to date with the latest software updates to ensure optimal performance and security.