[Must Read] Top 9 Ways to Fix iPhone Keeps Turning On and Off

“My iPhone keeps turning on and off for past 3 hours. When it turns back on, it takes about 5 minutes to access Home Screen. Once I do, the phone is laggy, glitches, and disconnects from LTE. Why does my phone keep turning on and off and is there any way to fix it?”

You’re relaxing on the couch, scrolling through your iPhone when suddenly it flickers, shuts down, and restarts over and over. It’s like you’re stuck in a tech version of Groundhog Day. But don’t worry, there are several reasons for it. We’ll also share 9 ways to stop your iPhone from its endless on-off cycle by targeting it from every angle possible.

Part 1: Why Does My iPhone Keep Turning Off and On by Itself?

If you’re wondering, “Why does my iPhone keep turning off and on,” it could be because of following reasons:

1. Failed Update - If you tried updating your iPhone to iOS 17/18 and the update failed, your iPhone might keep restarting repeatedly.
2. Corrupted iOS - Sometimes, corrupted iOS files can cause iPhone shutting off randomly and then restart issue.
3. Unstable Driver - Recent changes or faulty drivers may cause a reboot loop.
4. Malware Attack - Jailbreaking your iPhone can expose it to malware, causing it to turn on and off unexpectedly.
5. Hardware Issue - Physical damage, like drops, liquid exposure, or battery problems, can cause your iPhone to reboot repeatedly.

Part 2: How to Stop Your iPhone From Turning Off by Itself?

There are numerous ways to fix “iPhone keeps turning off and on” issue depending on how severe the problem is. But rather than trying manual ways to resolve it, try a solution that guarantees high success: Tenorshare ReiBoot, an iOS repair and management tool that can resolve a vast array of iOS problems leading to “iPhone restarting” error.

[Must Try] Fix iPhone Turning Off and On Without Data Loss

Tenorshare ReiBoot can fix various iOS issues such as iDevices stuck in restart loop, Recovery Mode, and white & black screen of death. Moreover, it can do all this without data loss. Here’s more about this tool:

• Enter/exit Recovery Mode in a single click.
• Upgrade/downgrade iOS without needing iTunes.
• Reset iPhone to factory settings without a passcode or Apple ID.
• Resolve various iTunes errors easily.
• Erase iOS devices permanently before selling or giving them away.
• Compatible with iPhone 15 and iOS 18.

Here’s how to use ReiBoot to fix iPhone stuck in a restart loop:

Step 1: Download, install, and execute ReiBoot on your computer. Then, connect your iPhone to same PC. Tap “Start Repair.”

Step 2: Choose your issue and press “Fix Now.” Then, tap “Standard Repair.”?

Step 3: Next, click “Download” to get latest firmware. Once it’s downloaded, tap “Standard Repair” again.

Step 4: ReiBoot will start fixing your iPhone stuck in restart loop. Afterward, it will reboot normally.

[Video Guide]

Part 3: 8 Simple Ways to Fix iPhone Keeps Turning On and Off

If you rather try manual ways to fix “iPhone keeps turning on and off” then here are 8 simple ways. However, the success of these methods depends on your situation and they might not work at all. However, there’s no harm in trying them out one by one until you find a solution that does the job:

1. Deplete iPhone Battery

If your iPhone keeps restarting it could be because of a software glitch. Many times draining battery completely and then fully charging it can help reset its system. If the problem continues, proceed to further methods.

2. Remove Unused Apps

When your iPhone randomly turns off and on full storage or extra apps running in background might be causing this issue. If that’s the case, remove unused apps to free up storage space and resources. Here’s how to do that:

Step 1: Touch an app that you want to remove and keep holding it until it starts to jiggle. Then, tap “Remove App.”

Step 2: Click “Delete App.” Next, press “Delete” to confirm.

3. Remove SIM Card

A loose SIM card can cause an “iPhone keeps turning off and on” issue. Thus, removing and re-inserting it will secure connection. To do so:

Step 1: Turn off your iPhone and use a SIM eject tool or paperclip to remove SIM tray. Step 2: Check SIM card for damage or dirt, then reinsert it properly.?

Step 3: Put tray back in, turn on your iPhone, and see if restarting issue is fixed.

4. Fix iPhone Turns On Then Immediately Off via Hard Reset

A temporary software glitch can cause your iPhone to restart randomly. You can use a hard reset (forced restart) to fix software issues if you’re unable to use its buttons. Here’s how to stop your phone from turning off by itself via hard reset based on your iPhone model:

• iPhone 8 and newer - Press and hold first “Volume Up,” then “Volume Down.” Then, press and hold “Power” button until Apple logo appears. Release it.
• iPhone 7/7 Plus - Press and hold “Power” and “Volume Down” buttons until Apple logo appears. Then release both of them.
• iPhone 5/6/SE - Press and hold “Home” and “Power” buttons together until screen turns black and Apple logo appears. Then release both of them.

5. Update iOS to the Latest Version

In the event your iPhone died and now turns on then back off, your iOS might be outdated. To fix it you can update to the latest iOS version by following instructions below:

Step 1: Head to “Settings.’ Then, choose “General.”

Step 2: Tap “Software Update.” If updates are available, download and install it.

6. Restore iPhone via iTunes

If your iPhone keeps restarting a corrupted file or app conflict can cause this. Therefore, restoring your iDevice with iTunes will replace the software and remove settings and apps, allowing you to reinstall them one by one to resolve issue. Here’s what to do:

Step 1: Install the latest version of iTunes on your computer. Then, execute it and connect your iPhone to same PC.

Step 2: Click “Summary” tab. Then, choose “Restore iPhone.” Tap “Restore and Update” to start downloading firmware, which takes about an hour.

7. Fix iPhone Keeps Turning Off and On with Recovery Mode

If your iPhone randomly turns off and on but is not detectable by iTunes, you’ll need to put it into recovery mode, and then restore it. To do so:

Step 1: Execute iTunes on your computer. Then, attach your iPhone to same computer.

Step 2: Enter Recovery Mode based on your iPhone model:

• iPhone 8 and Newer - Press “Volume Up,” then “Volume Down.” Then, press and hold “Power” button and keep pressing it until Recovery Mode appears.
• iPhone 7/7 Plus - Press and hold “Power” and “Volume Down” buttons and keep pressing them until Recovery Mode appears.
• iPhone 6s or Earlier - Press and hold “Home” and “Sleep” buttons and keep pressing them until Recovery Mode appears.

Step 3: iTunes will detect your iPhone in Recovery Mode. Tap “Restore.”

8. Contact Apple Support

If your iPhone is still stuck in restart loop, the issue could be more serious. It could be a hardware one or related to an iPhone component such as a failing battery. In such a case, you’ll need to contact Apple Support for the fix.

The Bottom Line

If your iPhone keeps turning on and off, you’re not alone. This issue can be caused by software glitches, corrupted files, hardware problems, or even malware. While you can try manual fixes like updating iOS, restoring via iTunes, or entering Recovery Mode, these can be time-consuming and may not always work.?

Therefore, consider ReiBoot iOS repair tool as it can fix 150+ iOS issues, including being stuck in a restart loop, without data loss. It also allows you to restore factory settings, manage iOS updates, and enter/exit Recovery Mode easily.