How To Fix It If iPhone 12 Became Extremely Laggy After iOS 14.4

In this troubleshooting guide, we will show you what you do if your iPhone 12 became extremely laggy after the iOS 14.4 update, and make you understand why such a problem occurs. You’ll also learn how to prevent it from happening again in the future. So continue reading as we may be able to help you. 

Performance-related problems are among the most common concerns any iPhone users can encounter every now and then. Some of them can really be very annoying but they’re actually easy to fix. Issues like this can be attributed to some firmware problems that can be fixed if you’re willing to troubleshoot your device. If you’re one of the users with this problem, here’s what you should do: 

First solution: Quick all background apps

It’s possible that your iPhone became extremely laggy due to some apps you previously used and are left running in the background. To rule this possibility out, you have to close them to see if the lags are minimized. Here’s what you should do: 

When you swipe up to go back to the home screen, the app you were using is just ‘minimized’ but not closed. So it’s left running and continues to use your device’s RAM and CPU. 

  1. Swipe up from the bottom of the screen and stop at the middle. This will show you the apps that are still running. 
  2. Swipe up on each preview to close them one after another. 

After you’ve done that, observe your iPhone’s performance to know if the lags are gone. 

Second solution: Refresh your iPhone’s memory

After closing all the apps, the next thing you have to do is to refresh your iPhone’s memory. It’s possible that the lags and freezes are due to some minor firmware glitch. Such issues can be fixed by doing the forced restart, which also reloads all apps and services. This is how you do it: 

  1. Quickly press and release the Volume Up button and then the Volume Down button. 
  2. Immediately after that, press and hold the Power key for 10 seconds. This will force your iPhone to shut down and power back up. 
  3. Once the Apple logo shows on the screen, release the Power key and wait until your device finishes the reboot. 

After the restart, try to see if your device now runs smoothly without lagging. The forced restart is actually a simulated battery removal that’s effective against problems like this. However, if your device continues to lag even after this, then try the next solution. 

Third solution: Check your iPhone’s storage

All apps and services that run on your iPhone use the storage; every time you use them they create a cache. If your device is already running low on storage space, then that might be the reason why it has become extremely laggy. So the next thing you have to do is to check the storage. Here’s where you can find it: 

  1. Launch the Settings app. 
  2. Find and then tap General. 
  3. Tap iPhone storage. 

On the next screen, you’ll be able to tell if your device is running low on space. You can also try to manage it by deleting some apps if necessary. 

Fourth solution: Reset all settings on your device

Assuming that your iPhone 12 still has sufficient storage space but still continues to lag, then it’s time to look at a different angle. It’s possible that some of the system cache files that implement the settings got corrupted. So what you have to do next is to reset all settings on your iPhone. Here’s how you do that: 

  1. From the Home screen, tap Settings. 
  2. Find and tap General. 
  3. Scroll down to the bottom of the screen, and then touch Reset. 
  4. Touch Reset All Settings. 
  5. If prompted, enter your security lock. 
  6. Tap Reset All Settings at the bottom of the screen, and then tap Reset All Settings again to confirm. 

After the settings reset, find out to know if your iPhone 12 is still running so slow or laggy. 

Fifth solution: Factory reset your iPhone

Most of the time, the previous solutions are enough to fix performance issues including this one. However, if the lags continue for some reason, then you have no other choice but to completely reset your device.  A factory reset will be able to fix this problem, but make sure to create a backup of your important files and data as they will be deleted. 

When ready, follow these steps to reset your device: 

  1. From the Home screen, tap Settings. 
  2. Find and tap General. 
  3. Scroll down to the bottom of the screen, and then touch Reset. 
  4. Tap Erase All Contents and Settings. 
  5. Tap Erase Now. 
  6. If prompted, enter your security lock. 
  7. Tap Erase iPhone at the bottom of the screen.  
  8. Tap Erase iPhone again to proceed.  
  9. Now enter your Apple ID password, and then tap Erase to proceed with the reset. 
  10. Wait until your iPhone has finished the reset, and then set it up as a new device. 

Your iPhone 12 should work properly after this, and it should be running smoothly now without the lags.

And those are the times you can do if your iPhone 12 became extremely laggy after the iOS 14.4 update. We hope that this guide can help you one way or the other. 

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