[2026] Fix iPhone Keeps Turning On and Off in 9 Ways

One Problem from Apple Community

My iPhone turns off and on repeatedly. It goes from a black screen to the Apple start up screen then back to the black screen. About 30 minutes of doing this it will come up to my home screen and as soon as I enter my passcode it will bring up my apps and then shut down again.

This guide starts with symptom diagnosis, then moves from low-risk checks to system repair, Apple restore, and hardware service so you can tell whether the iPhone keeps restarting because of software or physical damage.

If your iPhone keeps turning on and off, the cause is not always the battery. In 2026, this query often appears after an iOS 27 update, failed restore, low-storage crash, or app conflict.

Quick answer

If iOS 27 keeps restarting, charge the iPhone first, force restart it, and check storage or recently installed apps. If the iPhone turns on then off at the Apple logo or stays in an iPhone restart loop, use a system repair path before assuming the battery is bad.

If your iPhone turning off and on by itself, it can be frustrating. Since this issue can stem from various causes, understanding why this happens helps you better find a solution. So, why does my iPhone keep turning off and on by itself? Let’s explore the possible reasons.

These are the possible reasons why your iPhone is turning on and off repeatedly. Below are 9 methods to resolve this problem. You can also learn about their differences first.

Use iMyFone Fixppo if the restart loop began after an iOS 27 update, restore, or firmware failure, provided the phone can still connect to a computer. Standard Mode should be described as a lower-data-risk repair path to try after a backup, rather than a guaranteed data-preserving fix.

It's compatible with many supported iPhone models and iOS versions, including iPhone 17/16 and iOS 27. With Fixppo, you can safely repair your device without any technical skills. Let's explore some of its key features.

When Fixppo makes sense:

• Use a guided iOS system repair workflow for update failure, Apple logo, recovery mode, boot loop, and black screen cases.
• Use Standard Mode as a lower-data-risk path after backing up important data; do not treat any repair as risk-free.
• Works for many supported iPhone/iPad models and recent iOS/iPadOS versions, including iOS 27 scenarios.
• Easy to use & Cost-effective: 3 steps to complete the process, saving you from expensive repair bills.
• Various Features: Cover to fix other problems including iPhone stuck in boot loop, stuck on restore screen, iPhone keeps showing the Apple logo, etc.

Fixppo helps to fix the issue of iPhone turns on and off repeatedly, let's follow to see how it works.

After downloading and installing Fixppo, launch it and click Start Repair.

Step 1: Now, choose Standard Mode, which can retain all your iPhone data while fixing the iPhone turning on and off issue.

Step 2: Once Fixppo detects your device, you can see the firmware file for your iPhone. Hit the Download button to get it.

Step 3: Once the firmware is downloaded, please click the Start Standard Repair button to begin, keep your iPhone connected during the whole process.

The process takes you about 5 minutes. Later, your iPhone won't keep turning on and off. When it restarts, enter the screen passcode and you can use it as usual, all data remain safe!

You can also watch the intuitive video to fix iPhone keeps turning off and restarting.

You can try the following 8 solutions when your iPhone keeps turning off and restarting. If this is an iOS system problem, the first 7 methods work for you. If nothing works, please contact Apple Support.

1 Drain iPhone Battery

If your iPhone keeps going on and off by itself suddenly, a simple trick like draining the phone's battery to recalibrate can fix this iPhone keeps turning off and back on issue. Here're two suggestions.

2 Clear iPhone Storage

Low storage can make iOS crash during startup, especially after a major update. If the phone stays on long enough, remove large videos, unused apps, and failed update files before trying another update.

Step 1: Open Settings > General > iPhone Storage.

Step 2: Check all apps and how much storage they use.

Step 3: Delete those unused apps or files, review the photos and videos you don't want as well t free up space.

3 Offload Problematic Apps

Sometimes, a faulty app can cause your iPhone keep turning on and off. If the app is incompatible with the system, it may trigger crashes and restarts. Therefore, uninstalling problematic apps can help resolve the issue and get your iPhone run smoothly with a lower risk of data loss after backing up important data. Here’s how to do it.

4 Force Restart to Fix iPhone Turning Off and On

Force restart is worth trying because it clears a stuck startup state. If the iPhone keeps restarting immediately afterward, move to iOS repair or Apple restore.

Fix iPhone Turning Off and On Repeatedly

Performing a force restart may temporarily stop your iPhone from random shutdowns. For potential iOS system glitches, it's recommended to fix the system so as to completely resolve the issue.

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5 Update or Reinstall iOS 27

If the device stays on long enough, update to the latest iOS 27 build. If it cannot finish the update, use a computer update or repair tool rather than repeating the same failed OTA update.

Check if there is a new update for your iOS by going to Settings > General > Software Update. If there is a new update, tap to download and install it after making sure you have enough storage space.

6 Restore with Finder / Apple Devices / iTunes

To fix iPhone switching on and off, Finder / Apple Devices / iTunes can be another solution at hand. Besides using it to back up your data, it's also a tool used for restoring iPhone from iOS glitches.

Note

Please notice that Finder / Apple Devices / iTunes will wipe out all your important iPhone data once it finishes restoring your device. If you feel like trying this method, don't forget to make a full backup of all your content first.

Let's see how to fix iPhone turning off and on by itself with Finder / Apple Devices / iTunes restoring method.

Step 1: Open your Finder / Apple Devices / iTunes and update it to the latest version. Then connect your iPhone to the computer with a cable.

Step 2: Click the Summary tab, then choose Restore iPhone shown on the right screen.

Step 3: Proceed by clicking Restore and Update. Finder / Apple Devices / iTunes will begin to download the firmmare to fix your iPhone, which will take an hour or so.

Your iPhone will be turned on once done. Now, you can restore the backup if you have. Or you have to set up the iPhone as a new one.

Tips

If Finder / Apple Devices / iTunes can't detect your iPhone, you can rapidly solve the problem with the Fix iPhone Restart Loop with a Lower-Data-Risk Repair Path; Or, you can try to put your device in recovery mode, then try Finder / Apple Devices / iTunes again to fix your iPhone that is shutting on and off.

7 Enter Recovery Mode to Fix iPhone Keeps Turning Off and On

The recovery mode, or the so-called iPhone restore screen, is a must step before trying to restore your iPhone.

If your Finder / Apple Devices / iTunes not recognizing your iPhone, which happens all the time actually, then you can try to put your iPhone enter recovery mode before using Finder / Apple Devices / iTunes to restore the device.

Here's the steps on how to enter recovery mode on iPhone and restore it with Finder / Apple Devices / iTunes.

Step 1: Open Finder / Apple Devices / iTunes again and connect your device to it.

Step 2: Follow the different steps to put your iPhone in recovery mode:

Step 3: Finder / Apple Devices / iTunes will begin to respond and detect that your iPhone is in recovery mode. Click the Restore button for it to fix the iPhone turning off and on issue.

8 Contact Apple Support

Sometimes some problems can be more serious. It could be a bad battery, shortened circuits, etc. Once you realize that the iPhone keeps turning on and off problem is beyond what any of the above techniques can solve, visit the nearest Apple Store to fix your iPhone.

Why does my iPhone keep restarting after iOS 27?

Common causes include failed update files, low storage, unstable battery health, corrupted apps, or firmware problems. Start with charge and force restart, then move to repair or restore.

Is an iPhone restart loop always a battery issue?

No. Battery damage is possible, but restart loops after an update are often software or firmware related.

When should I contact Apple Support?

Contact Apple if the iPhone overheats, restarts only while charging, has liquid damage, or still restarts after a restore.

When an iPhone keeps restarting, use the symptom to choose the fix. Low-risk checks come first, Fixppo or computer update fits software loops, and Apple service is the right path when power or hardware signs appear.

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Article by

Melvin Cooper

Melvin Cooper has over 10 years of experience in the technology industry and is an expert at providing tips and handy solutions to Apple and Android users. Dedicated to helping millions of users improve their experience with mobile devices, he has maintained an impressive record of solving problems.