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How to Fix iOS 16 Performance Problems

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As we push away from the iOS 16 release we’re hearing about a variety of performance issues plaguing iPhone users.

While many iPhone users are having a great experience on Apple’s new operating system, others are complaining about bugs and performance problems.

The current list of iOS 16 performance issues includes UI lag, freezes, lock ups, and random reboots. These are extremely common, particularly on aging iPhone models. Newer models like the iPhone 14 series aren’t immune to performance problems though.

Performance issues can be difficult to fix. While you might be able to fix some problems on your own, others may require a fix from Apple in a new software update. In some cases, you may need to contact Apple support or bring your iPhone into an Apple Store.

If you can’t wait for a new version of iOS 16 and/or you don’t have time to get in touch with Apple support, we have some fixes that could help fix the iOS 16 performance issue(s) you’ve encountered on your phone.

Restart Your Phone

If you start noticing UI lag or another performance issue after install iOS 16, try restarting your iPhone. Power it down, leave it off for a minute, and the turn it back on. This has resolved many issues for us in the past.

Update Your iPhone

Apple will occasionally push new iOS 16 software to your iPhone. Point updates (x.x.x) are typically focused on fixing bugs while milestone upgrades (x.x) usually deliver a mix of new enhancements.

The company might not call out performance fixes in an iOS 16 update’s change log, but new software always has the potential to help (or, in some cases, hurt) your iPhone’s overall performance.

For more on the latest version of iOS 16, take a look at our guide.

Update Your Apps

If you haven’t done so already, make sure you update your applications to the latest version.

App developers are currently rolling out iOS 16 support updates and they could help stabilize iOS 16’s performance on your iPhone.

Before you install the latest version of an app you’ll want to go into the App Store and read reviews from other iOS 16 users. If the reviews are mostly good, download the latest version

Cleanup Your iPhone’s Storage

If you’ve had your iPhone for awhile you might have a ton of clutter taking up space on its internal storage. Deleting unnecessary files could help speed up your iPhone. This is especially true if you’re almost out of storage.

To start, you’ll want to check and see how much space is free on your iPhone. Here’s how to do that:

  • Head into Settings.
  • Tap General.
  • Tap iPhone Storage.

Apple makes some recommendations based on your utilization of your iPhone’s storage, but you can also just go through each section manually delete files you no longer need.

Stop Using Background App Refresh

iOS’ Background App Refresh feature refreshes apps in the background to show you the latest data when you open them up. It also makes your phone work in the background. So, if you don’t need this, you might want to shut the feature off. Here’s how to do that:

  • Go into the Settings app.
  • Tap General.
  • Tap Background App Refresh.
  • At the top of this screen tap Background App Refresh and toggle it off.

If you want to keep it on for some apps, leave it on and then go down your list of apps and manually turn it off for apps you don’t use.

Reset All Settings

If you’re still not getting the kind of performance you’d like out of your iPhone, try resetting your settings. Here’s how to do that:

  • 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 restore your iPhone’s settings to their factory defaults.

Downgrade

If you can’t find a fix for your problem and/or don’t want to wait for Apple’s next iOS 16 update, you can try downgrading back to the previous version of iOS. Your downgrade options will change over time and sometimes downgrading won’t be available.

For more on the iOS downgrade process, take a look at our walkthrough.

Restore

If you can’t find a fix for your issue, and you want to avoid taking your iPhone into a store, you might want to restore your device. This should only be used as a last resort.

You can do this via Finder, iTunes, or iCloud.

4 Reasons Not to Install iOS 16.0.2 & 11 Reasons You Should

Install iOS 16.0.2 for Better Security

Install iOS 16.0.2 for Better Security

If security is important to you, and you're still lingering on iOS 15, think about installing Apple's iOS 16.0.2 update right away.

iOS 16.0.2 doesn't have any security patches on board, but if you're still running iOS 15 your iPhone, you'll get a bunch of new patches when you upgrade.

iOS 16.0 brought new security patches to the iPhone. If you're interested in the exact nature of these improvements, you can read about them over on Apple's security website.

If you skipped iOS 15.7, iOS 15.6.1, or any older versions of iOS, you'll get the security patches from those updates with your iOS 16 update as well. 

In addition to those patches, iOS 16 brings some additional enhancements to privacy and security including Safety Check which, according to Apple, will help "people in domestic or intimate partner violence situations review and reset the access they’ve granted others." 

The feature also resets system privacy permissions for apps and restricts Messages and FaceTime to the device on hand.

Apple's also made some improvements to Passkeys in Safari. iOS 16 brings a brand new sign-in method that's end-to-end encrypted and safe from phishing and data leaks. 

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