By Dylan / Last update September 8, 2022

My iPhone keeps restarting over and over

iPhone 12 won’t stop restarting since I install the iOS 15. Sometimes it restarts itself after several minutes, and sometimes after 1 hour. This just happens over and over again. Someone could tell me how to fix the issue?

- Question from Apple community

Why does iPhone keep restarting itself?

iPhone keeps restarting can be caused from many reasons, including:

● Bad update: Some people reported when they upgrade their iPhone to a new iOS version, the iPhone will restart itself over and over again. If you have the problem after update iOS, you can refer to this post to downgrade your iOS: How to Downgrade from iOS 14 to iOS 13 without losing data?
● Faulty settings: Sometimes, users might have some incorrect settings making their iPhone 13, 12, 11, X, 8 keeps restarting by accident.
● Hardware issue: After years of use, an iPhone especially for old models can have some hardware problems. Such as low battery health. You could go to iPhone Settings > Battery > Battery Health to check it.
● Water impact: Even if water resistance has been a feature on iPhone for several years, it doesn’t mean that iPhone is completely safe in the water. You should check the lightning port and make sure it is dry. If the restarting problem is just caused by light water damage, you would find your iPhone turning normal the next day.

iPhone Start Logo

If your iPhone randomly restarts when you are watching films or playing games, it would be very annoying. Next, this post will guide you on how to fix iPhone keeps restarting on iOS 14, 15 easily with 5 methods.

How to fix iPhone keeps restarting on iOS 15,16 issue

Knowing the reasons why your iPhone won’t stop keeping restarting itself, you can troubleshoot the causes of the problem and follow the solutions below to fix this issue.

Solution 1. Force Restart your iPhone

You can do a hard reset to your iPhone to complete restart iPhone. This action could revive iPhone from many system issues and the causes of iPhone restart loop might be fixed.

According to the types of iPhone, pick the right way to force restart your iPhone.

● iPhone 8 or later: Press the volume+ button and then quickly release. Press the volume- button and then quickly release it. Press the power button for seconds and wait for the Apple logo.
iPhone 7 and iPhone 7 Plus: Press both the power button and volume- button for seconds until you see the Apple logo.
iPhone 6s or earlier: Press both the power button and the Home button for seconds and wait for the Apple logo to appear.

Restart iPhone

Solution 2. Update iOS to the latest version

If you are running the official iOS, your problem might be fixed in the next update.

Go to iPhone Settings > General > Software Update to update iOS to the latest version. If you have problems updating iOS, you can follow the guide to fix an error occurred while checking for a software update.

iOS Software Update

Solution 3. Set Date back to December 1

This method seems weird, but it is recommended by many users out of the problem. It’s simple so you could have a try.

Solution 4. Reset All Settings

If you have installed iOS 14 beta or just update iPhone as usual, some of your settings might be modified. You can recover all the settings.

Go to iPhone Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings.

Reset Network Setting

Solution 5. Fix iPhone in Recovery Mode

iPhone Recover Mode will repair iPhone from any status, but it will lose everything on iPhone so you need to follow the next section to make a backup of iPhone data.

Step 1. Connect iPhone iTunes on computer with a USB cable. Enter Recovery Mode by the way you force-restart iPhone in solution 1. Wait until you see the Recovery Mode screen.

Step 2. After you see the pop-up in iTunes, click Update and wait for iTunes repair your system.

iTunes Repair iPhone Recover Mode

Backup your iPhone to protect your iPhone data

iPhone automatically restarting might cause more serious problems, like data loss, so you need to backup iPhone data.

Here we recommend a popular and powerful iOS backup tool named FoneTool, which allows you to easily backup photos, videos, music, contacts, and messages from iPhone to computer. And it also performs well in transferring iPhone data from a computer to your iPhone or from iPhone to a PC.

✓ Fast Backup: Users who have a large amount of data on their iPhones can benefit from it. Backup hundreds of GB of data can be finished in 20 to 30 minutes.
✓ Selective backup: This tool allows you to select some type of files to backup if you don't want to backup all iPhone data to save some space.
✓ Widely Compatible: Support all the iOS devices including iPhone 14, 13, 12, 11, X, 8, 7, 6, iPad 9, 8, 7, iPad Pro 2021, 2020, and iPod Touch 8, 7, 6, and so on.

Download FoneTool to computer for free and backup your iPhone in 3 steps.

Download Freeware Win 11/10/8.1/8/7/XP
Secure Download

Step 1. Install and open FoneTool, click 'Phone Backup" on the main interface, select "Full Backup". If you want to backup messages, contacts, photos, music, etc, click "Selective Backup" to choose items you need.

click full backup

Step 2. Your iPhone information will be shown here, click "Get Started " button.

full backup

Step 3. To backup private data, including Health Data, Fitness Record, please encrypt the backup process. Then select a backup storage path. Click "Start Backup".

start backup

Step 4. Wait for the backup process to get finished.  When the issue is solved, you can go to "Backup History"  to locate  and restore data to your iPhone.

full restore


Now you have known why iPhone keeps restarting and how to fix iPhone 14, 13, 12, 11, X, 8, 7 keeps restarting problem on iOS 15, 14. by reading this passage. Just troubleshoot and solve the problem with the above solutions.

To make sure your iPhone data is safe, you need to use FoneTool to backup your iPhone to a computer or external hard drive. Besides, this tool can also help you to transfer data from an iPhone to another iPhone.

Is this guide helpful? You could share it to help more people.

FoneTool Runs Perfectly on

iOS Versions
  • iOS 16/15/14/13/12/11 and former
  • iPadOS 16/15/14/13/12/11 and former
iOS Devices
  • iPhone 14/14 Pro (Max), 13/13 mini/Pro (Max), iPhone 12/12 mini/Pro (Max), iPhone 11/11 Pro (Max)
  • iPhone X/XR/XS/XS Max, iPhone 8/8 Plus, iPhone 7/7 Plus, iPhone 6/6s/6s Plus
  • iPhone SE (1st, 2nd, 3rd generations)
  • iPod touch 1/2/3/4/5/6/7
  • All models of iPad Air, iPad mini, iPad Pro and iPad