5 things you need to know about the iOS 15.4.1 update

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Apple has pushed an iOS 15.4.1 update and it brings some extremely important changes for iPhone users around the world.

iOS 15.4.1 is compatible with all phones running iOS 15, including the iPhone 6s, iPhone 6s PlusiPhone SEiPhone 7, iPhone 7 PlusiPhone 8, iPhone 8 PlusiPhone XiPhone XSiPhone XS MaxiPhone XRiPhone 11iPhone 11 ProiPhone 11 Pro MaxiPhone SE 2, iPhone SE 3iPhone 12 miniiPhone 12iPhone 12 ProiPhone 12 Pro Maxand the iPhone 13 Series

Unlike iOS 15.4, the previous version of iOS 15, iOS 15.4.1 is a minor upgrade. That said, it delivers important bug fixes for the iPhone, including one that should fix abnormal battery drain issues.

With that in mind, we want to walk you through everything you need to know about Apple’s latest iOS 15 update for iPhone.

In this walkthrough, we’ll take you through iOS 15.4.1 changes, software performance, iOS 15.4.1 issues, iOS 15.4.1 jailbreak status, and more. We’ll start with some thoughts on iOS 15.4.1’s performance so far.

iOS 15.4.1 Review

If your iPhone is currently running iOS 15.4, you will see the smallest download size of iOS 15.4.1.

For iOS 15.4 users, the iOS 15.4.1 download is quite small. It is about 300MB for iPhone 12 Pro users which is higher than the previous version of iOS 15. You can expect a similar size for other iPhone models.

Keep in mind that the exact size of the iOS 15.4.1 download depends on your iPhone model and the version of iOS currently running.

If your iPhone is running an older version of iOS, you may see a larger download because your update includes the changes from any iOS updates you skipped.

If you’re moving from iOS 15.4, the installation process will take 10 minutes or less. It took about seven minutes to install on an iPhone 12 Pro.

We’ve been using iOS 15.4.1 on a few different iPhone models for several days now, and here’s what we’ve learned about the software’s performance so far:


  • Battery life is stable.
  • Wi-Fi connectivity is fast and reliable.
  • Bluetooth works normally.
  • GPS and mobile data are both stable.

App performance

  • Third-party apps including Netflix, Dark Sky, Twitter, Slack, Asana, Gmail, Chrome, and Spotify currently work fine.
  • First party apps like Safari and Podcasts are also stable.


  • iOS 15.4.1 feels just as fast as iOS 15.4.

If you’ve been experiencing bugs and/or performance issues on iOS 15.4 or an older version of iOS, you probably need to install the iOS 15.4.1 update on your iPhone now.

If you need help deciding whether or not to upgrade to iOS 15.4.1, check out our reasons to install and not install the software now.

iOS 15.4.1 Problems

The iOS 15.4.1 update is causing problems for some iPhone users. Some of these issues are brand new, while others are inherited from iOS 15.4 and older versions of iOS 15.

The current list of issues includes installation issues, first and third party app issues, UI lag, Exchange issues, Touch ID and Face ID issues, and abnormal battery drain.

If you run into a problem on iOS 15.4.1, check out our list of solutions for the most common iOS 15 problems. We have also released some tips that can help you improve your phone’s performance and some tips that can help you fix bad iOS 15 battery life.

Apple stopped signing on iOS 15.4, which means you won’t be able to revert your iPhone’s software to the previous version of iOS 15 if iOS 15.4.1 starts to cause problems on your device. You also cannot downgrade to anything older than iOS 15.4.

Keep this in mind if you have a good experience with iOS 15.4 or older. Once you’ve made the switch to iOS 15.4.1, there’s no going back.

To learn more about the downgrade process, see our guide.

iOS 15.4.1 Features

Apple’s point updates (xxx) usually bring under-the-hood improvements for iPhone users and that’s exactly what iOS 15.4.1 has on board. Here is the official iOS 15.4.1 change log:

Bug fixes

  • Fixed an issue where the battery may drain faster than expected after updating to iOS 15.4.
  • Fixed an issue where braille devices would stop responding when navigating text or displaying an alert.
  • Fixes an issue where Made for iPhone hearing aids may lose connectivity to some third-party apps.

iOS 15.4.1 also brings a new security patch to iPhone. If you want to know more about it, go to Apple’s official security site

iOS 15.4.1 Jailbreak

The developer teams behind the checkra1n and unC0ver jailbreak tools have released versions that are compatible with newer versions of iOS 14, but only Checkra1n is compatible with iOS 14.5.

Unfortunately, the tools support 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, iOS 15.0.1, iOS 15.0, iOS 14.8, iOS 14.7.1, iOS 14.7, iOS 14.6 or iOS 14.5.1.

The latest version of unC0ver is compatible with newer iPhones, including the iPhone 12 series. That’s great news if you’ve been waiting to jailbreak your new phone. Unfortunately, it is only compatible with versions up to iOS 14.3.

There’s no way to downgrade your phone’s software to iOS 14.5 or older versions of iOS, meaning you’re out of luck if you upgrade, or if you’ve already upgraded to newer iOS software.

What’s next

Apple has confirmed that a new version of iOS 15 and iOS 15.5 are currently in beta testing ahead of public release.

iOS 15.5 is a milestone release, but it looks like it will be a pretty minor release. That said, it should still include a mix of new features, bug fixes, and security patches.

The company has not confirmed a specific release date for iOS 15.5, and we expect it to remain in beta for a while longer while Apple fixes the issues. As of now, we expect the official release to come sometime in May.

If your problems are really bad, or if you just want to try new software, you can try downloading the iOS 15.5 beta on your iPhone now.

Take a look at our walkthrough to learn more about iOS 15.5 and the beta. To learn more about the upcoming iOS 15.5 release date, check out our guide.

4 reasons not to install iOS 15.4.1 and 11 reasons why you should

Install iOS 15.4.1 for better security

Install iOS 15.4.1 for better security

If security is important to you, then you should definitely consider installing Apple’s iOS 15.4.1 update right away.

iOS 15.4.1 has one new security patch on board and you can read more about it on Apple’s website† It helps protect your phone from damage.

If you missed the iOS 15.4 update, it had a whopping 36 new security patches on board. To learn more about these patches, visit: Apple’s security site for the details

If you missed iOS 15.3.1, it had one security patch on board. For more information, visit Apple’s security page

If you missed iOS 15.3, you will also get the corresponding patches with your upgrade. iOS 15.3 brought 10 new security patches for iPhone users. If you are interested in the details, you can read more about it here

If you missed iOS 15.2.1, you will get the security patch with your upgrade. More information about the switch can be found at Apple’s website

If you missed Apple’s iOS 15.2 update, you’ll get the 30+ security patches with your upgrade. You can read all about it on the company security site

iOS 15.2 also included some significant privacy upgrades. The software brought the company’s app privacy report to Settings. This lets you see how many times your apps accessed your location, photos, camera, microphone, contacts, and more in the past seven days. You can also see their network activity.

In addition, iOS 15.2 . brought Apple’s communications security features for children. You’ll find these features in the Messages app, Siri, Spotlight, and Search.

If you missed iOS 15.1, iOS 15.4.1 will bring the security patches to your iPhone. You can read more about it at Apple’s website

If you missed iOS 15.0.2, you will also get the security patch with your upgrade. You can learn more about it here

iOS 15.0 also brought numerous security patches to your iPhone. If you’re moving from iOS 14 and you’re interested in the exact nature of these improvements, you can read more about them at Apple’s security website

Apple has updated its website with new information about iOS 15’s suite of security patches. The company now says the software has fixed an issue that could have exposed a user’s personal Apple ID information and in-app search history. It also states that iOS 15 has fixed an issue that allowed apps to ignore privacy preferences.

If you skipped iOS 14.8 or an older version of iOS, you will also receive the security patches from those updates with your iOS 15.4.1 update.

In addition to these patches, iOS 15 comes with some security and privacy upgrades, including improvements to Siri. Requests to Siri are now processed on the device itself with Neural Engine. This makes it safer.

If you’re an Apple Card user, you now get a security code that changes regularly to use when transacting online.

Apple has also added a built-in authenticator similar to Google Authenticator. Allows you to generate verification codes for enhanced login security under your passwords.

There is also a Mail feature that hides your IP address.

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