iPhone Keeps Restarting? Troubleshoot the Boot Loop Issue

You pick up your iPhone to check a message, and it shows the Apple logo. Then the screen goes black. Then the logo again. Over and over. Your iPhone is stuck in a boot loop, and it feels like your whole digital life is trapped inside a spinning circle. Don’t panic. This is a common issue, and in most cases you can fix it yourself without losing any data. Let’s walk through the solutions step by step.

What Exactly Is a Boot Loop?

A boot loop happens when your iPhone tries to start up but crashes before the home screen appears. The device restarts itself repeatedly, showing the Apple logo, then going dark, then showing the logo again. It can last for minutes or hours. Sometimes it stops if you plug in a charger, other times it keeps going until the battery dies.

The loop often begins after an interrupted software update, a failed jailbreak, or a corrupted settings file. In rarer cases, hardware damage triggers the restart pattern. Knowing the cause helps you choose the right fix.

Common Culprits Behind a Boot Loop

Here are the most frequent reasons an iPhone gets stuck in a boot loop:

• A failed or interrupted iOS update (especially if you lost power mid-update)
• Corrupted system settings or a bad configuration profile
• A full storage drive that prevents the OS from loading
• A faulty battery or charging port that trips a hardware safety check
• Physical damage from a drop or water exposure
• A stuck button (like the Side or Volume buttons) that keeps sending restart commands

Most of these can be fixed on your own. Let’s start with the easiest solution.

Step-by-Step Troubleshooting Guide

Follow these steps in order. Stop when your iPhone boots normally.

1. Force Restart Your iPhone

A force restart is different from a normal restart. It interrupts the boot loop and gives the system a clean slate to try again. The button sequence changed with newer models, so check which one you have.

For iPhone 8, iPhone SE (2nd and 3rd gen), iPhone X, and later (including iPhone 16 in 2026):
Press and release Volume Up, then press and release Volume Down, then press and hold the Side button. Keep holding until the Apple logo appears, then disappears, and the screen goes black. Keep holding a few more seconds until the Apple logo returns. Let go.

For iPhone 7 and 7 Plus:
Press and hold both the Side button and Volume Down button simultaneously. Hold until you see the Apple logo.

For iPhone 6s and earlier:
Press and hold both the Home button and the Side (or Top) button. Hold until the Apple logo appears.

If the force restart breaks the loop, great. Your iPhone should boot normally. If it goes right back into the loop, move on to step 2.

2. Charge and Try Again

A completely dead battery can cause a boot loop because the iPhone doesn’t have enough power to complete startup. Plug your device into a wall charger (not a computer USB port) and let it charge for at least 30 minutes. Then try the force restart again.

If the loop only happens when you plug it in, you might have a battery or charging port issue. That guide covers specific fixes for charging problems.

3. Enter Recovery Mode and Update or Restore

Recovery mode lets you connect your iPhone to a computer and either reinstall iOS (preserving your data) or wipe the device clean. This is the most reliable fix for a boot loop caused by software corruption.

What you’ll need:
– A computer with the latest version of macOS or iTunes (or Finder on macOS Catalina and later)
– A USB cable that works

Steps to enter recovery mode:

1. Connect your iPhone to the computer.
2. On your iPhone, press and quickly release Volume Up, then Volume Down, then press and hold the Side button. Keep holding even after the Apple logo appears.
3. After about 10 to 15 seconds, you’ll see a screen with a computer icon and a cable. That’s recovery mode.
4. On your computer, a pop-up will say “There is a problem with the iPhone that requires it to be updated or restored.”
5. Choose Update. This reinstalls iOS without erasing your data. It’s the safer option.
6. If Update fails or the boot loop continues, you’ll need to choose Restore. This erases everything and installs a fresh copy of iOS. You can then set up your iPhone as new or restore from a backup.

Expert tip: Always try Update first. You can recover your data afterward. Only use Restore if Update won’t work, because it wipes the phone. If you have a recent iCloud or computer backup, a Restore is less painful.

4. The DFU Mode Reset (Last Software Resort)

Device Firmware Update (DFU) mode goes deeper than recovery mode. It reloads the iPhone’s firmware and operating system from scratch. Use this only if recovery mode didn’t help.

Entering DFU mode (for iPhone 8 and later):
1. Connect to a computer.
2. Press Volume Up, then Volume Down, then hold the Side button for 10 seconds.
3. Without releasing the Side button, also press and hold the Volume Down button for 5 seconds.
4. Release the Side button but keep holding Volume Down for another 10 seconds.
5. The screen will stay black. Your computer should detect a device in DFU mode.
6. Follow the on-screen prompts to restore.

DFU mode almost always fixes software-related boot loops. If it doesn’t, the problem is likely hardware.

Troubleshooting Methods at a Glance

Method	Saves Data?	Difficulty	Best For
Force restart	Yes	Easy	Temporary glitch after update or crash
Recovery mode (Update)	Yes	Medium	Failed update, corrupted settings
Recovery mode (Restore)	No	Medium	Severe software corruption
DFU mode restore	No	Hard	Firmware-level issues, last resort before repair

What If Your iPhone Still Reboots?

If none of the software fixes worked, the boot loop is likely caused by a hardware problem. Common hardware triggers include:

• A swollen or dying battery that can’t deliver stable power
• A damaged charging port or flex cable
• Liquid damage that shorted a sensor
• A logic board issue (especially on older models like iPhone 7 or iPhone X)

You can check for a swollen battery by looking at the screen. If it’s bulging or separating from the frame, stop using the phone immediately. Contact Apple Support or a certified repair shop.

For other hardware issues, try these steps:

• Remove any case or screen protector and clean the charging port with a soft toothpick (gently).
• If your iPhone has a Home button, clean around it. A stuck button can cause restarts.
• Check if the loop only happens when you press a certain button or plug in accessories.

If you suspect a battery drain issue or overheating, those guides can help you isolate the problem before paying for repairs.

Model-Specific Quirks That Cause Boot Loops

Some iPhone models have known weak points. If you’re using one of these, pay extra attention:

• iPhone 7 / 7 Plus: The audio IC chip on the logic board can fail, causing a boot loop. The device often cycles with the screen on but no sound.
• iPhone X / XS: The front sensor array (Face ID) can short and trigger restarts. Look for Face ID not working alongside the boot loop.
• iPhone 12 series: A charging port failure can cause the phone to restart when connected to power. Try wireless charging to confirm.
• iPhone 14 and later (including 2026 models): Software issues after a failed iOS 19 update are more common. Double check that you have enough free storage before updating. Read our guide on managing storage space to avoid this.

When to Seek Professional Help

You’ve tried everything in this guide. Your iPhone is still stuck in a boot loop. At this point, it’s time to get expert help. Apple’s diagnostic tools can detect hardware failures that consumer software cannot. They can also attempt data recovery if your information is critical.

If you’re concerned about data loss, do not attempt further software resets. Turn off the device and take it to a repair shop that offers board-level diagnosis. They can often extract data without restoring.

Before you go, try one last thing: connect your iPhone to a computer and see if it appears in Finder or iTunes. If it does, you may be able to reset settings without data loss before the next restart cycle begins.

Your iPhone Can Be Saved

A boot loop feels like an emergency, but it almost always has a solution. Start with the force restart. Move to recovery mode if needed. Only restore or seek hardware repair as a last resort. The key is to stay calm and work through the steps in order.

You don’t need to be a tech expert to fix this. Most boot loops are caused by a software hiccup that your computer can correct. If you’re reading this with a looping iPhone in your hand, try the force restart right now. It might be all you need. And if it’s not, the other methods here have helped thousands of people get their iPhones back. You’ve got this.