iPhone Keeps Restarting – How to Fix It

Quick overview:

Have problems restarting your iPhone? Does it keep crashing and restarting again? Below, we provide some standard solutions. Every solution can be applied to any iPhone model.
You may experience iPhone random reboots after any of these scenarios: 

  • Upgrading to the latest version of iOS
  • Charging the iPhone with headphones plugged in
  • Connecting to a computer

Furthermore, the iPhone may continually reboot due to four factors - bad updates, malware attacks, unstable drivers, and hardware problems.

Force restart your iPhone

An occasional glitch can cause a lot of problems. Usually, a hard reset saves the day when that happens. If your iPhone keeps restarting, the first thing you should try is forcing it to restart.

Remove the SIM card

You might have a broken SIM card or a problem connecting to the cell carrier, though that isn't likely. After removing the SIM card and putting it back in, the loop should cease, suggesting you should get in touch with your service provider.

Update the iOS version of your iPhone

If your iPhone keeps crashing and restarting, it may be a problem with the apps. The latest version of apps might be able to solve it.

  • Visit Apple's App Store.
  • Select Updates from the left-hand side of the screen.
  • Select Update All if you want to update all the apps.

Otherwise, you can select the apps you want to update individually.

Free some storage

If your phone has been with you for a long time, its storage might be almost full. If the memory on a phone is nearing capacity, it usually affects the performance, and sometimes it may freeze and shut down.

You can check which apps and files are taking up the most space by going to Settings > General > iPhone Storage. If necessary, delete some.

Your photos and videos will not be lost. iCloud will back them up for you. Learn more about data transfer options here.

Determine which app is causing the problem

Remove the problematic apps if the problem persists after a software update. How can you find out which apps are causing the problem? Apple's iOS comes with a feature called "Analytics" that is useful in diagnosing problems. By digging out the problematic areas, it will make finding the culprits a little easier.

Navigate to Settings > Privacy > Analytics & Improvements > Analytics Data.

Now, scroll through the entire list to find any apps that appeared multiple times. If you find those apps, removing them from your device might solve the problem.

Update all apps

There are often updates to improve performance and fix bugs in most apps. You can also update apps manually at any time by selecting Settings -> App Store -> App Updates on your phone. The best way to keep all your apps up to date is to use the "Automatic Updates" feature (Settings -> App Store -> App Updates) on your phone. If you want to update all the apps installed on your iPhone at once, go to App Store * Your Profile * Tap Update All.
You can use iTunes to do that from another Mac logged into your Apple account.

Check for any hardware problem

Frequently dropping your phone may also result in the iPhone becoming stuck in the boot loop. Your device may be experiencing a hardware issue if you have recently dropped it.

An old or drained battery could cause the issue. You can fix the issue by replacing the faulty/worn-out battery if it is found to be the culprit. Be sure the Lightning port is clean if you keep your iPhone restarting while it is charging.

The smartphone may have become blocked from charging because of pockets of lint, dirt, and debris accumulating over time. Try to charge the device after cleaning the lint and gunk out of the charging port. You may also try using a different charging cable. The Apple Support is more reliable even though third-party services are cheaper. For a trusted solution that won't cost you a fortune, contact Apple.

Clean your iPhone’s Charging Port

If the iPhone is charged or connected to headphones, it may keep rebooting. Lightning port clogs may cause charging problems or electrical connections to malfunction. You should clean your iPhone's lightning port. You can do this with a toothpick or a small needle.

If you're suspecting battery issues, you can also check out this detailed article.

Reset all settings

You should reset all settings if you have tried the methods above but were not able to resolve the issue. If you have tried the methods above but are still experiencing problems, you should try the next method.

An obvious measure is taken in case of system settings malfunction. To perform the operation, follow these steps:

  • Go to Settings > General > Reset.
  • You may be prompted for a passcode. Once you have entered the password, tap Reset All Settings to return to factory settings.

All of these solutions are only appropriate if your iPhone restarts constantly but still turns on. However, how do I fix an iPhone that keeps starting and won't turn on? Go to case 2.

Restore your iPhone

The next step is to perform a full restore if you are still having problems. You must use a desktop computer to do this because doing it on the cloud will erase all your data. In the iTunes app, open the device tab and click on the "Device" button. First, connect your iPhone with a USB cable (wireless network connections are not as stable).

On the next page, click "Summary." Then click "Restore."

It may be necessary to restore it in recovery mode if this regular restore does not work. Apple Support can assist you if the system does not work or the buttons on your iPhone are broken.

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