As we push away from the latest iOS 15 firmware version, we hear about several performance issues that iPhone users face.
While many iPhone users have a great experience with Apple’s latest iOS 15 software, others complain about bugs and performance issues.
The current list of iOS 15 performance issues includes UI lag, freezes, freezes, and random reboots. These are very common, especially on older iPhone models. Newer devices like the iPhone 13 Series however, are not immune to performance issues.
Performance issues can be difficult to resolve. And while you may be able to fix them yourself, others may require a repair from Apple.
In some cases, you may need to contact Apple Customer Support or, in more extreme cases, take your iPhone to an Apple Store.
If you can’t wait for a new version of iOS 15 and/or don’t have the time to contact Apple Support, we’ve got some solutions that can help fix the issues you’ve encountered on your phone.
Restart your phone
If you start to notice UI lag or other performance issue after installing the latest version of iOS 15, try restarting it. Turn it off, leave it off for a minute, then turn it back on. This has solved many problems for us in the past.
Update your iPhone
Apple will occasionally push new iOS 15 software to your iPhone. Point updates (xxx) usually focus on fixing bugs, while milestone upgrades (xx) usually deliver a mix of new features, improvements, and bug fixes.
The company may not mention performance improvements in the change log of an iOS 15 update, but new software always has the potential to help (or in some cases, hurt your iPhone’s overall performance).
To learn more about the latest version of iOS 15, check out our guide.
Update your apps
If you have not already done so, make sure to update your applications to the latest version.
App developers are currently rolling out support updates and they can help stabilize iOS 15 performance on your iPhone.
Before installing the latest version of an app, you should go to the App Store and read reviews from other iOS 15 users. If the reviews are mostly good, download the latest version.
Clean up your iPhone’s storage
If you’ve had your iPhone for a while, you might have a ton of junk taking up space on its internal storage. Removing this clutter can help speed up your iPhone. This is especially true if you’re running out of space.
For starters, you’ll want to check how much space is available on your iPhone. Here’s how to do that:
- Go to Settings.
- Tap General.
- Tap iPhone Storage.
Apple will make some recommendations based on your use of your iPhone’s storage space, but you can also just go through each section to manually delete files you don’t need.
Stop using background app refresh
Background App Refresh refreshes apps in the background to show you the latest data when you open them. It also makes your phone work in the background. So if you don’t need this, you can disable the feature.
- Go to the Settings app.
- Tap General.
- Tap Refresh app background.
- At the top of this screen, tap Refresh app background and turn it off.
If you want to keep it on for some apps, leave it on and go to your apps list and manually turn it off for apps you don’t use.
Reset all settings
If you’re still not getting the kind of performance from your iPhone, try resetting your settings. Here’s how you do it on iOS 15:
- Go to Settings.
- Tap General.
- Tap Reset Transfer or Reset iPhone.
- Tap Reset.
- Tap Reset all settings.
- Enter your passcode if you have one enabled.
This will reset your iPhone’s settings to factory defaults, so make sure you have your Wi-Fi passwords handy. You must enter them again.
If you can’t find a solution to your problem and/or don’t want to wait for the next iOS 15 update from Apple, you can try downgrading back to the previous version of iOS. Your downgrade options will change over time and sometimes downgrading is not available.
Check out our walkthrough to learn more about the iOS downgrade process.
If you can’t find a solution to your problem and you want to avoid taking your iPhone to a store, the best thing to do is restore your device. This should only be used as a last resort.
You do this via Finder, iTunes or iCloud†
4 reasons not to install iOS 15.4.1 and 11 reasons why you should
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 are an Apple Card user, you now get a security code that changes regularly to use when making online transactions.
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.