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iPhone Restart When Entering Passcode: Here is How to Fix

Although iPhone is one of the most efficient smartphone brands, it still has its fair share of issues. One issue some iPhone users are encountering is the device restarting when entering the passcode.

If you are wondering why your iPhone restart when entering the passcode, you have landed at the right place. Keep going through the below paragraphs to find out what causes this situation and what you can do to correct it.

Part 1. Reasons Behind iPhone Restart When Entering Passcode

There can be a variety of causes that can make the iPhone restart when entering the passcode. Some of the reasons include:

  • Hindered Update: One of the most common causes behind the issue is delayed updates. When updating the iPhone to the latest version, the procedure might get hindered for some reasons. This can lead to various issues, including restarting when entering the passcode. That's why Apple recommends fully charging the phone before updating.
  • Problem with App: Sometimes the third-party applications on your device might root this issue. It means that glitches, bugs, or the app's incompatibility with the system can cause the problem.  
  • Malware/Virus Attacks: When it comes to security and privacy, no other smartphone brand can beat iPhone devices. However, things will be different if you are using a jailbroken iPhone. In such cases, your iPhone can be attacked by different types of malware which can lead to many issues.
  • Unstable Driver: Another reason that can lead to this disturbing issue on your iPhone is the unstable driver. Such problematic drivers can make the iPhone restart continuously and cause other issues. Although there is no particular explanation for why the driver on your device can be unstable, any changes in the device may lead to it.
  • Hardware Issues: Last but not least, damaged or malfunctioned hardware on your iPhone can also root the problem. Especially it's normal to encounter such issues when there is internal damage in the device.

Part 2. Fixes for ‘iPhone Restarting When Entering Passcode’ Issue

Now you know what causes iPhone to restart when entering a passcode. Let's check out the possible fixes for it.

Delete Third-party Apps That May Root the Problem

As we said above, third-party apps can sometimes cause restarting problems. Therefore, if you have recently installed any unsecured app on your device, consider getting rid of it to fix the issue. Here is how to do so:

  • Unlock your iPhone and tap and hold the app icon you need to uninstall.
  • A “Remove App” option will occur.
  • Click on the “Remove App” option to remove the app.  

remove apps from iphone

Clean Up the iPhone Storage

Most iPhone users usually store a lot of things on their iPhones, starting from photos and videos to many games and apps. Unfortunately, packing your iPhone storage with so many files and programs can accumulate corrupted data which can lead to a lot of issues, including automatic restarts.

So, consider getting rid of all the unnecessary files on your iPhone.

Take out of the SIM Card

In some cases, the wireless carrier on your iPhone can also lead to several nuisances, including the restart when entering a passcode. Try removing the SIM card from your iPhone and check if the issue is solved.

If you don't encounter any restart when the sim slot is empty, there might be some issues with the SIM on your iPhone.

remove sim card

Restart The Device

Restarting your iPhone is a speedy and straightforward way to get rid of a variety of problems. The procedure to restart your iPhone will depend on the model of your iPhone.

  • If you are using an iPhone 6s or older model, we recommend you do a hard reset to solve the problem. To do so, click and hold the power button and home button. Wait till the Apple logo occurs on the screen and then release the buttons.
  • For iPhone 7 or 7 plus, long-press the volume and side button together. Wait till you glimpse the Apple logo.
  • If you own an iPhone 8 or a newer device, tap click volume up button and let it go immediately, and then do the same for the volume down button. After that, long press the side button until you notice the Apple logo.

restart iphone

Update iOS and All Other Apps

Outdated iOS software is one of the leading causes of various problems on iPhone devices. Keeping your iPhone up to date is crucial to enjoy a smooth performance free from bugs and glitches.

Go to Settings > General. Then find Software Update under General to check if the latest version is available. Download and install the update when available.

update ios

The outdated apps on your iPhone can also cause restarting problems sometimes. There is an easy way to update all iPhone apps at once.

To do so, open App Store and click the profile icon on top of the display. Tap on "Update All" to update all the apps at once.

update all

Recommended Way to Solve the Issue in 1 Click

If the above fixes didn't work for you to solve the iPhone restart while entering the passcode issue, there might be a system bug/error in your device. In this case, the FoneGeek iOS System Recovery will be a splendid way to fix the problem. The powerful program is capable of fixing all sorts of system errors and bugs in iOS devices.

It arrives with a straightforward interface and navigation, making it easy for you to fix any problem quickly. Below, we will discuss how to utilize the FoneGeek iOS System Recovery to get rid of the restarting problem while entering passcode:


  • Download the FoneGeek iOS System Recovery on your PC and then complete the installation. Once it is done, launch the program.
  • Select Standard Mode from the FoneGeek interface to fix the issue without any data loss.

choose repair mode

  • Now connect your iPhone device to the PC through a cable. If FoneGeek does not recognize the iPhone, consider booting the device into DFU/Recovery mode following the on-screen guide.

put iphone into recovery mode

  • Now, you will be moved to the firmware download page. Pick the preferred firmware version based on your iPhone model.

download firmware

  • Once the firmware download is complete, click "Fix Now" to begin the repair. The repair procedure will take a while. Once it is done, your iPhone will restart and come back to its normal state.

fix now

Reset All Settings

Resetting all the Settings on your iPhone can help eliminate any issues caused by incompatible settings. Here is how to do it:

  • Browse iPhone’s Settings app and go to General.
  • Then find and open Reset.
  • Click “Reset All Settings”.
  • Confirm the popup to proceed.  

reset all settings

Contact Apple Support

If you are still encountering the issue even after trying all the fixes mentioned above, there might be an issue with the iPhone hardware. In this case, consider contacting Apple support. They will help diagnose the issue, find the cause, and suggest a solution.  


It can be very intimidating when you cannot use your iPhone normally because of the frequent restarting while entering the passcode. However, we hope that the above fixes will help you to get rid of the nuisance. Especially you can utilize the FoneGeek iOS System Recovery to quickly fix the issue and get your device back to the correct state. So go check it out now!

Joan J. Mims

Joan J. Mims is interested in researching all tips about iPhone, iPad and Android. He loves to share useful ideas with all users.

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