"Hello,I recently updated my iPhone to iOS 12/11 and the phone is not working the way it was before updating. It is running terribly slow. How can I make it work in the same speed it was before? Can anyone please advise me? Thanks!"

There are many iOS users expressing their disappointment and annoyance at the same time after getting done with new iOS 12/11 installation. iPhone running slow is one of those problems. We replied to more and more on iPhone users these days and this problem really ruins the users' experience. Therefore, we decided to write this article and introduce some methods to fix this iPhone running slow issue. Scroll down and try the given solutions.

1 Turn On Reduce Motion & Reduce Transparency

Enabling the 'Reduce Motion' can help in resolving the problem of iPhone running slow after updating to iOS 12/11. It will disable all the motion effects like parallax, animation effects in some applications like weather animation etc. To turn it on, follow the steps provided below.

  • Start with opening "Settings" and tapping on "General".
  • Go to "Accessibility" and toggle the "Reduce Motion" button on.

Another feature you need enable is Reduce Transparency from all the places like notification center, lock screen or control center etc. This feature was added since the release of iOS 7 and can take up memory. Reducing this see-through background could finish the lag in the iPhone. To turn it on:

  • Go to "Settings" and move to "General".
  • Navigate to "Accessibility" and tap on "Increase Contrast" after scrolling down.
  • Lastly, tap on "Reduce Transparency" and toggle it on.

Turn On Reduce Motion & Reduce Transparency

2 Hard Reset iPhone

Performing hard reset doesn't take much time or technical expertise. You just need your fingers and few seconds to wait for. More than that, it contains no harm while performing. Therefore this method should be tried first when your iPhone begins to running slow after updating to iOS 12/11.

All you need to do is keep pressing the "Sleep/Wake" and "Home" button until the Apple logo comes on the screen. Release the buttons once you see the logo. If you use iPhone 7 or 7 Plus, you need to press "Volume Down" button instead of "Home". If you are using iPhone X and iPhone 8, quick press "Volume Up" and "Volume Down" buttons and then keep holding side button until you see the Apple logo.

Hard Reset iPhone

3 Turn Off Background App Refresh &Automatic Download

Background App Refresh is one of the automated features of iPhone and can hamper the speed of the device ultimately making the iPhone running slow than usual even you are running iOS 12/11. Therefore, you need to disable "Background App Refresh" in order to improve the speed of your iPhone. To perform this method, go to "Settings" > "General" > "Background App Refresh" and turn it off.

Turn Off Background App Refresh

Turning off the Auto-Update feature is recommended when your iPhone is running slow. Go to "iTunes & App Store" and turn off the options below "Automatic Downloads" to make the device perform well. The reason behind this is automatic updates of apps use up more memory and lead to the slow performance. Hence, don't rely on automatic update; instead go for manual update approach.

turn off Automatic Downloads

4 Update Apps & Delete Unwanted Apps/Files

If your apps are not updated, that might cause iPhone running slow. This is because the apps that are not updated are not compatible with the new iOS 12/11. Therefore, to speed up your device, update the apps in it. Just go to "App Store" and touch "Update All".

Update Apps

Less space in the device can also be the reason of iPhone running slowly. Make sure to have 1GB as a minimum space. So, if you have low storage in your device, take some time to remove the unnecessary files and applications or delete the apps taking more space. For example, you can delete apps from home screen directly by long pressing it and tapping on the cross appearing on the right corner or you can head to "Settings" > "General" > "Storage & iCloud Usage" > "Manage Storage". There, you will notice a list of apps and how much space each one is taking. You can choose "Delete App" to remove a particular app.

Delete Unwanted Apps/Files

5 Fix iPhone Running Slow after iOS 12/11 Update without Data Loss

When your iPhone is irritating you with its sluggish and inactive performance and you cannot afford to lose your data on the device, you should try iMyFone iOS System Recovery. The program offers 3 modes to fix iOS issues with higher success rate: Standard Mode, Advanced Mode, and Exit Recovery Mode. It will not take any of your data away while fixing under the Standard Mode and the quick solution Exit Recovery Mode.

iMyFone iOS System Recovery (iOS 12/11 Supported)

Key Features:

  • This program repairs various kinds of iOS problems like black screen/white screen, DFU mode, iPhone not turning on and so on. It also helps when you meet iTunes error 21 and error 4005.
  • No alteration in data using the Standard Mode is the big plus of this program.
  • It is exceptionally easy to use and gives full security and protection.
  • It can seamlessly work with all iOS devices and iOS versions including iPhone 8, iPhone X and iOS 12/11.

Try It FreeTry It Free

Steps to Fix iPhone Running Slow in iOS 11.3

Step 1 – Installing the Program

The process will start when you download and install iMyFone iOS System Recovery. Afterwards, launch the software and plug your iOS device to PC. Then, select "Standard Mode" from the three alternatives on the screen.

 choose the Standard Mode option

Step 2 – Get Your Device into DFU Mode or Recovery Mod

The next step includes putting your device in DFU mode or Recovery Mode. For this, iMyFone iOS System Recovery will show you the instructions. Follow them and after completion, the program will discover your device easily.

 Get Your Device into DFU Mode

Step 3 – Carry on with Firmware Downloading

Download the matching firmware for your iOS device. Click on the "Download" button and the program will do the rest. It will automatically download the newest firmware for your model.

Firmware Downloading

Step 4 – Repair the Device

In the end, repair your device which will begin by clicking on "Start to Fix". Your reparing process will initiate. Wait for completion and once done, check the phone is back to normal or not after it restarts.

Repair the Device

6 Factory Reset iPhone

When the above fixes didn't show any results and you are still having iPhone running slow problem, factory resetting should be the last resort. This will wipe off all the stored data in the device making it the same as when you bought it. Thus, to get rid of the problem, go to "Settings" > "General" > Reset" > "Erase All Content and Settings". Now, please type your passcode and hit "Erase All Content and Settings" again.

Factory Reset iPhone

Most of the important tasks start terminating iPhone running slow problem. We provided some easy and handy tips that you can apply to get out of the trouble that your iPhone is working awfully slowly after iOS 12/11 update. Also, the bonus is, you can repair and speed up the device without losing any important data of your device. Have your problem gone now? Please let us know.