What to do if your iPhone keeps lagging after iOS 13.3 [Troubleshooting Guide]

If your iPhone keeps lagging, it may be a sign that there are rogue apps on the device or it could be a sign of a poor system performance due to low internal memory space. The phone’s performance could deteriorate overtime and may slow down due to continuous usage. That’s why you may experience a freezing device or a lag one. 

But software updates could also cause lagging issues. Just like what happened to a few iPhone users who recently updated to iOS 13.3. If you would like to know how to remedy a lagging iPhone, continue reading and learn more information below. 

Troubleshoot a lagging or freezing iPhone after installing iOS 13.3

Your iPhone may deliver a poor performance after an iOS update due to random bugs and software glitches that usually plague the system after installing the update. A common scenario is a lagging iPhone where it will freeze up temporarily. This error may occur if your device is trying to cope up with the recent changes and it is adjusting to the new software installed. 

If this is the first time that you encounter a lagging issue, follow the procedures that are written below to deal with the error after iOS 13.3 update. 

First solution: Power cycle your iPhone. 

Cutting off the power on your iPhone should be the first thing to do if there are errors that show up after installing an iOS update. This simple method can kill minor software glitches that may have been causing the lagging issue on your device. Doing so will refresh the system and stabilize the phone’s performance. iphone keeps lagging force restart

You can either perform a soft reset to reboot your iPhone with the steps below: 

  1. Press and hold the Power/Side button and either of the Volume buttons simultaneously for a few seconds. 
  2. Release both buttons once Slide to Power off prompt appears on the screen.
  3. Drag the Power off slider to the right to turn off your phone.
  4. After 30 seconds, press and hold the Power/Side button again until you see the Apple logo.

An alternative method is a force restart. This should suffice the need to reboot the device but you’re unable to do a soft reset due to a frozen screen. It users the hardware keys instead of screen commands to initiate a restart. Here’s how: 

  1. Press and release the Volume Up button quickly.
  2. Press and release the Volume Down button quickly. 
  3. Lastly, press and hold the Side button for a few seconds until you see the Apple logo.

Both soft reset and force restart will not affect the iPhone’s internal memory. There’s no need to create backups beforehand. Once the phone has restarted, use it as usual and check if it still lags or not anymore. 

Second solution: Update all apps on your iPhone. 

Updating the apps should also help in improving the phone’s performance after an update. Installing app updates can help in fixing reported app errors and stabilize their performance. Any rogue apps that may have been causing the iPhone lagging problem should be fixed by this process. update apps iphone keeps lagging

Your iPhone will usually install app updates automatically but there are times that it will not do it. To manually update the apps on your device, refer to these steps: 

  1. From the Home screen, tap on App Store to open it. 
  2. Tap on Today tab at the bottom. 
  3. Then tap on the user profile icon on the top right corner of the screen. 
  4. You should see the account details. 
  5. Scroll down to the Available Updates section. 
  6. Tap on Update next to the app to update individual apps.
  7. Tap on Update All to update all apps simultaneously. 

Once the updates are installed, reboot your device to implement necessary changes and remove dump cache that might have been accumulated during the app updates. 

Third solution: Reset all settings on your iPhone. 

Incorrect or invalid settings could affect the overall performance of your iPhone. There are vital information that should be kept as they are or it will cause trouble and could result to a lagging performance of the device. This might be the cause on why your iPhone succumb to a freezing or lagging problem after iOS 13.3 update.iphone keeps lagging reset settings

iOS overrides could alter some information on the phone’s system and invalidate them. To remove such occurrence, reset all settings on your iPhone to revert them to their default values and configurations. To give this a shot, here’s how it’s done: 

  1. Access Settings from the Home screen. 
  2. Tap General.
  3. Scroll down to and then select Reset
  4. Tap the Reset All Settings option.
  5. Enter your device passcode once prompted.
  6. Then tap to confirm all settings reset. 

Your phone will reboot automatically once the reset process is done. As soon as it boots up, check your iPhone if the lagging issue has been resolved. 

Fourth solution: Factory reset your iPhone. 

If your device is still lagging after performing the methods above, you might need to opt in for a stronger solution to deal with the problem. Stubborn glitches are usually hard to remove by basic procedures. This procedure will wipe out all contents on your iPhone and restore the original factory settings. iphone keeps lagging factory reset

Before you do this, make sure to create backups of your important files and data via iTunes or iCloud. Once ready, follow the steps listed below to factory reset your iPhone: 

  1. Access Settings from the Home screen. 
  2. Tap General.
  3. Scroll down to and then select Reset
  4. Tap the Erase all contents and settings option.
  5. Enter your device passcode once prompted.
  6. Then tap to confirm all settings reset.

After the reset, your phone will reboot automatically. To use it again, set it up like a new one and check if the lagging error has been rectified. 


Fifth solution: Perform a recovery mode restore on your iPhone. 

Used as an advanced solution that deals with complex system error, recovery mode restore might be the answer to the lagging issue on your iPhone if none of the solutions is able to fix the problem. 

To carry out this process, you’ll need to prepare a Mac or Windows computer with the latest iTunes installed. Also ensure that your computer runs on the latest operating system that is compatible with your iPhone. If all requirements are met, connect your device to the computer using the Apple-supplied USB/lightning cable. Then allow iTunes to sync with your iPhone and backup files, if possible. Once the backup is secured, follow these steps to put your iPhone in recovery mode and then restore iOS in iTunes:

  1. Press and release the Volume Up button quickly.
  2. Press and release the Volume Down button quickly.
  3. Then press and hold the Power/Side button once prompted with Connect to iTunes screen. Do not release the button when Apple logo appears as you will need to enter recovery mode state.
  4. Once you enter the recovery mode, you’ll see either Update or Restore option.
  5. Select Restore if you want to reinstall and download iOS on your device without erasing data. 

Do not disconnect your phone and keep it connected until the entire restore process is finished. Then check if the issue has been fixed. 

Sixth solution: Perform a DFU mode restore on your iPhone. 

If your iPhone still gets the lagging issue up to this point, then try performing the last resort that could fix the problem. Device Firmware Update or DFU mode restore is the most in-depth type of restore that you can do to your iPhone. This will put your device in a state where it can communicate with iTunes even when bootloader is not sync or activated. 

It is important to note that you can only perform this procedure as long as your iPhone did not have any physical damage. Executing this method on a physically strained iPhone could lead to a brick device or permanently damaged iPhone. But if your phone did not incur such damage, you may perform the steps below: 

  1. Using the Apple-supplied USB/lightning cable, connect your iPhone to the computer that you used to synced before. 
  2. Press and quickly release the Volume up button.
  3. Press and quickly release the Volume down button.
  4. Press and hold the Side/Power button until the screen goes black.
  5. After the screen turns black, press and hold the Volume down button while keep holding down the Power/Side button
  6. Wait for 5 seconds then release the Power/Side button but keep holding the Volume down button until your iPhone shows up in iTunes. 
  7. Release the Volume down button once you see your iPhone in iTunes then follow the rest of the on-screen instructions to start restoring your iPhone through iTunes.

You can perform a force restart once the process is completed to exit DFU mode. 

Still having an iPhone that keeps lagging? 

Serious threats might have affected the phone’s system and could be the reason why the issue persists. For that matter, it is necessary to contact Apple support as they could give you additional information on how to deal with the lagging iPhone. If you happen to know the nearest Apple service center in your area, you can also give them a quick visit and have their onsite technician examine your device. There might be some sort of hardware issues that’s causing the lagging issue after updating to iOS 13.3.