Why Does My iPhone Keep Restarting? Here’s The Fix!

Why does my iPhone keep restarting, and what do I do about it? We trust our iPhones and they need to work all the time. It would be great if there was a single reason why iPhones restart over and over again, but there isn’t a magic bullet for this problem. In this article, I’ll explain what causes iPhones to keep restarting and I’ll show you how to fix the restarting iPhone problem.

Attention iPhone X owners: If you have an iPhone X or iPhone XS that keeps restarting, please read my new article to find out how to stop your iPhone X from restarting over and over again. If those fixes don’t work, come back and follow this guide.

Why Does My iPhone Keep Restarting?

iPhones that keep restarting generally fall into two categories:

  1. iPhones that restart intermittently: You can use your iPhone for a while with no problem at all, and then your iPhone suddenly restarts.
  2. iPhone restart loop: Your iPhone continuously restarts and it’s totally unusable. The Apple logo appears and disappears on the screen, over and over again.

If your iPhone falls into the second category, skip ahead to step 5. It’s impossible to do the first few steps if you’re unable to use the software on your iPhone. Let’s dive in, so you can stop shouting “My iPhone keeps restarting!” at the cat.

1. Back Up Your iPhone

Before we do any troubleshooting at all, make sure your iPhone is backed up. If your iPhone has a hardware problem, this could be your last chance to back up your data. If we need to, we’ll restore your iPhone in a later step, and you need a backup before you restore.

If you need help backing up your iPhone, Apple’s support article has an excellent walkthrough. Once you’re backed up, you’ll be ready to get started fixing the problem if your iPhone keeps restarting or if your iPhone keeps turning on and off.

2. Update Your iPhone’s Software (iOS)

Like Windows on a PC or OS X on a Mac, iOS is your iPhone’s operating system. iOS updates always contain lots of fixes for software bugs and other problems. Sometimes, a software update fixes the problem that’s causing your iPhone to keep restarting or enter a restart loop.

To check if any software updates are available, go to Settings -> General -> Software Update. If an update is available, install it.

install ios 15 on your iphone

You can also connect your iPhone to your computer and use iTunes (PCs and Macs running macOS 10.14 or older) or Finder (Macs running macOS 10.15 or newer) to update your iPhone’s software. If your iPhone is continually restarting, iTunes or Finder might be your best bet.

3. Determine If An App Is Causing Your iPhone To Restart

It’s very rare for an app to cause an iPhone to restart or turn on and off repeatedly. For the most part, the software on your iPhone is shielded from problem apps. That being said, there are over 1.5 million apps in the App Store and they’re not all perfect.

If you installed an app just before your iPhone entered a restart loop, uninstall that app and see if the problem resolves itself.

Settings -> Privacy -> Analytics & Improvements -> Analytics Data is another place to check for problem apps. It’s normal to see several entries in this list. Quickly scroll through the list and look for any apps that are listed over and over again. If you find one, uninstalling that app may fix your iPhone.

analytics data on iphone

4. Reset All Settings

Reset All Settings isn’t a magic bullet, but it can resolve certain software issues. Go to Settings -> General -> Transfer Or Reset iPhone -> Reset -> Reset All Settings to restore your iPhone’s settings to factory defaults. You won’t lose any of your apps or data, but you will have to enter your Wi-Fi password again.

reset all settings ios 15

5. Remove Your SIM Card

iPhone restart loops can be caused by issues with your iPhone’s connection to your wireless carrier. Your SIM card connects your iPhone to your wireless carrier, so removing it is best way to troubleshoot issues where your iPhone keeps restarting.

Don’t worry: Nothing can go wrong when you remove your SIM card. Your iPhone will immediately reconnect to your carrier as soon as you put it back in.

Apple’s support article about how to remove the SIM card from your iPhone will show you exactly where the SIM card is located on your iPhone. You’ll use a paper clip to eject the SIM tray from your iPhone.

If removing your SIM card fixes the problem, put the SIM card back in your iPhone. If the problem comes back after you put your SIM card back in, you’ll need to restore your iPhone (step 7) or replace the SIM card with your carrier.

If removing the SIM card doesn’t fix the problem, don’t put your SIM card back in until you’ve completed the next step. If you’d like to learn more about your iPhone’s SIM card, check out my article called “Why Does My iPhone Say No SIM Card?”.

6. Hard Reset

You shouldn’t do a hard reset on your iPhone unless it’s absolutely necessary. It’s kind of like turning off a desktop computer by unplugging it from the wall. That being said, an iPhone restart loop is one of those times where a hard reset is warranted.

To perform a hard reset, hold the power button and Home button (the circular button below the screen) at the same time until your iPhone screen goes blank and the Apple logo reappears.

On an iPhone 7 or 7 Plus, the buttons you need to press to execute a hard reset are slightly different. Simultaneously press and hold the power button and the volume down button.

If you have an iPhone 8, 8 Plus, or X, the process of hard resetting is also different. Press and release the volume up button, then the volume down button, then press and hold the side button.

Regardless of what model iPhone you have, make sure you hold both buttons down together for at least 20 seconds. People were amazed when they’d come into the Apple Store and I’d quickly fix their dead iPhone with a hard reset. They thought they did a hard reset at home, but they didn’t hold both buttons down for a long enough time.

If you removed the SIM card from your iPhone in the previous step, now’s a good time put it back in your iPhone. We’ve eliminated the possibility that your SIM card is causing your iPhone to restart. Hopefully the hard reset will fix the problem where your iPhone kept restarting, but if it continues, you’ll have to reset your device by following the instructions below.

7. Restore Your iPhone Using iTunes

Restoring your iPhone completely erases and reloads the iPhone’s software (iOS), and it can eliminate a slew of software issues at the same time. When we restore your iPhone, we’ll eliminate the possibility that a software issue may be causing your iPhone to restart — that’s why Apple techs do it so often.

Your iPhone needs to be connected to a computer to restore. I recommend doing a special type of restore that Apple techs do called a DFU Restore, which goes deeper than a regular restore and can solve more problems. You won’t find it anywhere on Apple’s website — read my article to learn how to DFU restore your iPhone.

After the restore finishes, you’ll be able to reload all your personal information from your iPhone backup in iTunes or iCloud. If you still have a problem, come back here and keep reading.

8. Check For A Hardware Problem

Hardware problems are a common reason why iPhones get stuck in a restart loop. If you’re using a case on your iPhone, remove it before you continue.

Look closely at the charging port on the bottom of your iPhone. Check to see if any debris is stuck inside and for signs of corrosion.

If something doesn’t look right, grab a toothbrush you’ve never used and gently brush out the charging port. A short circuit or other problem inside the charging port can cause all sorts of problems with your iPhone.

9. You May Need To Repair Your iPhone

We’ve eliminated the possibility a software issue is causing your iPhone to keep restarting and we’ve checked for hardware issues on the outside of your iPhone. If your iPhone is in a restart loop, your iPhone probably needs to be repaired.

If you choose to get help at your local Apple Store, make sure you have an appointment with the Genius Bar so you don’t have to wait around. A less-expensive alternative is Puls, a mail-in repair service that does great work.

Wrapping It Up

By this point, I hope we’ve fixed the problem that caused your iPhone to keep restarting. I’d like to hear your experience in the comments section below, and if you have any other questions, feel free to ask them in the Payette Forward Facebook Group.

About Author

I'm a former Apple employee and the founder of Payette Forward, and I'm here to help you with your iPhone.

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Najibullah
19 days ago

Hi I have an iPhone XS Max. After updating to iOS 15 it is getting restarted. After one, two, or three hours I do a hard reset and a lot of things to resolve it but it is still not fixed.

Rals
1 month ago

Today I woke up in the morning and my iPhone X just randomly decided to do boot loops, which is weird because I wasn’t using it roughly last night, nor was I charging it. It was just a surprise that it did this out of nowhere. Anyway, I had taken the SIM out and tried doing the factory reset/recovery/restore in my MacOS and the process worked until it said “…The iPhone will restart, do not unplug device and it will show up in the side bar” Which I was hopeful for. However, when it reset, it went back to being… Read more »

Aj harrison
1 month ago

Hello. I have an iPhone 7 and it will randomly restart over and over again. However, it doesn’t while it’s on the charger. I have done the hard reset about 3 times, I have no updates I need to install. I have gone through all my pictures and apps to make more room incase that was an issue. I looked at my SIM card and I think it looked fine. It also doesn’t restart while I’m on a call. I don’t know how to fix this. I’ve been leaving it on the charger anytime I use it so it won’t… Read more »

Iphone Fixed
1 month ago

Recently my iPhone 7 plus battery started to bloat. All functions normal. After I had the battery replaced by a random phone battery replacement company (took 5 minutes), everything functioned fine until I got back home that night. The Battery would only charge to 40% and it kept resetting itself randomly. It would enter the normal home screen and function normally but about 4 minutes, then it would reset. I started getting worried as it would not even stay on to save a backup. Did all the usual steps — hard reset, adaptors check, etc. but since my iPhone worked… Read more »

Editor
Colin Boyd
1 month ago
Reply to  Iphone Fixed

Wow, you went on quite a journey to get this issue resolved! We’re so glad to hear that this solution worked for you, but it’s not one that we would recommend to everyone. Having repairs performed by third-party repair companies, or performing hardware repairs from home, can void your iPhone’s warranty. If Apple detects that an iPhone’s hardware has been serviced by an unlicensed repair service, they might be willing to perform repairs on it in the future.

Ajnad
1 month ago

My iPhone 6s is stuck and restarts while I’m using is. Is there any solution for this?

Omedullah Hmadard
1 month ago

Hi, I have replaced my iPhone 8 screen. It was good but after a while now it keeps restarting. I performed the hard reset and the battery health is also 87% but it’s still restarting.

DEAN
1 month ago

Hi I have my iPhone 7+ and its going through a restart loop every now and then and it is also very hot. I removed the SIM card and and the time intervals of the restarts are slightly longer but it still happens.

Editor
Colin Boyd
1 month ago
Reply to  DEAN

Hi Dean! That sounds like a very inconvenient problem to be dealing with! Here’s a link to a video we published recently all about how to fix a hot iPhone: https://www.youtube.com/watch?v=69pyqTz7NWI

I hope this helps!

Finn
1 month ago
Reply to  DEAN

thats happening with me too 🙁

Michelle
2 months ago

I have tried everything you have stated here. My iPhone 11 still going into a restart loop. I have use of it for a few minutes, then it restarts. It keeps doing this after an update. Every other time your methods work. Not this time. Even after a full system restore in DFU mode. Only had the phone for 6-8 months.

Katara
2 months ago

My iPhone 6 battery ran out so I put it on a charger and it was in a restart loop. Since it was 2nd hand and I already replaced the battery once, I bought another new phone, a second hand but iPhone 8. It hasn’t even been a week and the phone battery just ran out and did the same thing. I don’t want to keep spending money, how do I fix this?

Editor
Colin Boyd
2 months ago
Reply to  Katara

Hi Katara, I’m sorry to hear your new iPhone isn’t doing the trick either. Buying a second-hand iPhone can be somewhat risky, depending on where you purchase it. It might require another investment, your safest bet might be to bring it to an Apple Tech for repair.

You might also want to check out our video we made all about iPhone battery health for more information about why your iPhone’s battery died so quickly. Here’s a link: https://www.youtube.com/watch?v=w6–6z4ZcNk

I hope this helps!

Molly Musumeche
2 months ago

Hi, I recently got my phone screen and home button replaced. Is a restart loop a “symptom” of this?

Editor
Colin Boyd
2 months ago

Hi Molly, did you have your screen and Home button replaced by Apple or a third-party?

Whitney
2 months ago
Reply to  Colin Boyd

I not molly but the same thing is happening, went through a third party

Editor
Colin Boyd
2 months ago
Reply to  Whitney

Hi Whitney, I’m sorry to hear you’re also dealing with this issue! Here’s a link to an article we published all about what to do when your iPhone’s screen stops responding: https://www.payetteforward.com/my-iphone-is-frozen-what-to-do-when-iphone-freezes/

I hope this helps!

KaTashia Bogan
3 months ago

Hi, my iPhone 6 was on the charger for 2 days straight and it has not came back on. All it does is shutdown and restart over and over again.I need help please.

Editor
Colin Boyd
2 months ago
Reply to  KaTashia Bogan

Hi KaTashia, I’m sorry to hear you’re having trouble with your Apple Watch! It sounds like this could be a problem with the device’s hardware. I’d recommend reaching out to Apple Support directly to find out about repair options. Sorry we couldn’t be of more help, best of luck sorting this out!

paige
4 months ago

hello, my iPhone 7 today dropped from 7% to 0% in the matter of seconds, i’ve been charging it now for 3 hours and it wont go above 4% and even when charging it keeps restarting randomly. i don’t want to buy a new phone straight away if there is a cheaper option. plz help 🙁

Helen
3 months ago
Reply to  paige

Same here. I really need help.

Jessy
3 months ago
Reply to  paige

Same problem man.
Is that solved?
Need the best suggestion.

Jessy
3 months ago
Reply to  paige

Same problem
And i tried 9 steps But there is no result i need my phone back
(and it’s a iPhone 7) 🙁
Answer me guys

collins
3 months ago
Reply to  paige

currently having the same issue, it won’t charge past 45% and keeps restarting. it happened some time ago but stopped after being switched off all night, now it’s back, any solution:(

Katara
2 months ago
Reply to  collins

That just sounds like a old battery when it can’t charge past something. You may need to replace the battery.

Iphone Fixed
1 month ago
Reply to  paige

Looks like a problem I recently had. I just posted my solution to the problem. I hope it can help you.

Movement
5 months ago

Hello, my iPhone XS keeps rebooting and sometimes shuts down when it’s in sleep/locked mode …what’s the cause I can’t be using my phone all day or put my phone display to never sleep. Pls help.

Connor
3 months ago
Reply to  Movement

THIS IS HAPPENING TO ME TOO IF YOU FIND A SOULTION PLEASE TELL ME I AM SO SICK OF IT ITS BEEN GOING ON FOR MONTHS

joe
3 months ago
Reply to  Connor

This just started happening to me too and its so weird its making my phone un useable. Ive tried everything and the only thing that fixes is it factory resetting and starting from scratch. but I can’t loose my data so that’s something I really don’t wanna do.

Old General
6 months ago

Please my iPhone keeps restarting and same time it turns silent all of a sudden. Have done everything but not working.

andrecejnar
4 months ago
Reply to  Old General

The same keeps happening to me its really annoying I think I’m going to have to get a new phone. 🙁

Heavenly
6 months ago

um so I did the hard reset so many times and it still doesn’t work I don’t have a computer so I don’t know what to do???

aj q
7 months ago

I cant do any of these my phone wont turn on.

Courtney T
7 months ago

I have an iPhone XR been having it for 4 years. It’s been restarting by itself all day yesterday so I backed up my iCloud and factory reset the phone. Now, that I have cleaned out all my apps. It still wants to act dumb. Keep in mind this is not the only time it has done this. It works for a few I can go on facebook and scroll for a little but then it will restart again. The phone can’t handle simple tasks like going to different apps without wanting to shut off. All I did was wake… Read more »

Aaron
4 months ago
Reply to  Courtney T

I’m in the same shoe as you man… I don’t even know if I can do a trade-in anymore…

Connor
3 months ago
Reply to  Courtney T

I have a Iphone xr and its doing the same problem I hope apple fixes this.