iPhone 12 Pro Max Keeps Restarting? Fix

If your iPhone 12 Pro Max keeps restarting, here’s what you should do to fix the problem.

Does your iPhone 12 Pro Max keep restarting by itself? Whether it happens at random times with gaps in between or your iPhone 12 Pro Max is stuck in an infinite boot loop, you have come to the right place. In this guide, we would discuss ways to fix the issue of the iPhone 12 Pro Max keeps restarting.

Depending on how frequently your iPhone 12 Pro Max restarts, you might not reach the settings in each and every each step, but do your best to read to the end and you’ll be sure to find a solution.

Before you start troubleshooting, be sure to back up your iPhone 12 Pro Max to iCloud when you run into this constant startup problem. Sometimes solutions require wiping your iPhone or other measures that will lose any locally saved information.

Even if you choose not to erase or restore your iPhone, the fact that it keeps restarting could point to a serious hardware problem. This might be your last chance to back up your iPhone before it stops responding completely.

The easiest way to back up your iPhone is by using iCloud.

Open the Settings app and tap your name at the top. Select iCloud, then scroll down and tap iCloud Backup. Choose to Back Up Now and wait for the backup to complete.

If that isn’t possible—perhaps because your iPhone 12 Pro Max keeps restarting mid-backup—connect your iPhone to a computer and try to back up using iTunes or Finder instead.

Fix iPhone 12 Pro Max that keeps restarting

Solution #1: Update iOS and Your Apps

Most of the time, your iPhone 12 Pro Max keeps restarting because of a software bug. It’s easy to patch these bugs by installing the latest software updates available for iOS and all the apps on your iPhone.

Head to Settings > General > Software Update to update iOS on your iPhone. If that doesn’t work, connect it to a computer and update iOS using iTunes or Finder instead.

After updating iOS, launch the App Store and tap the Profile icon in the top-right corner. Then choose to Update All the apps on your iPhone.

Solution #2: Free Up More Storage

Even if you have a 128GB iPhone 12 Pro Max, you shouldn’t cram it with 128GB worth of content. Instead, it’s much better to keep at least 10 percent of your storage empty.

Your iPhone uses this free space to copy files, move data around, and work more efficiently while processing tasks. If your storage is completely full, your iPhone 12 Pro Max can’t work as well, which might explain why it keeps restarting.

Head to Settings > General > iPhone Storage to take a look at your storage usage. Then use these tips to delete documents and data on your iPhone if you need to make more space.

Solution #3: Uninstall Problematic Apps

Even after updating all your apps, some of them can still cause problems. If an app is poorly developed or hasn’t been updated in a long time, it might make your iPhone 12 Pro Max restart every time you open it.

Try to take notice of which apps you’re using when your iPhone 12 Pro Max restarts. If the same app keeps cropping up, uninstall it from your iPhone and switch to an alternative app instead.

To uninstall apps, go to Settings > General > iPhone Storage, then scroll down and tap on the relevant app. In the app details page, tap Delete App.

Solution #4: Reset All Settings

It’s unlikely, but a problem with your settings could cause your iPhone 12 Pro Max to keep shutting down or restarting. Fortunately, you can reset all the settings on your iPhone without losing any other data on your device.

The only major downside to resetting your settings is that you’ll need to input the Wi-Fi passwords for all networks you use again.

To reset your settings, head to Settings > General > Reset and tap Reset All Settings.

Solution #5: Take off Your SIM card

Even your SIM card can cause your iPhone 12 Pro Max to restart. This usually happens if your SIM card can’t connect to the carrier for some reason. It can even lead your iPhone 12 Pro Max to get stuck in a boot loop that’s hard to escape from.

All you need to do is use a SIM pin or a straightened paperclip to pop the SIM tray out of your iPhone.

If this works, but then your iPhone 12 Pro Max keeps restarting again when you reinsert the SIM card, keep following the next steps to force restart and restore your iPhone before putting the SIM card back in.

If your iPhone 12 Pro Max still keeps restarting after this step, ask your carrier for a replacement SIM card.

Solution #6: Force Restart Your iPhone

It’s not usually a good idea to force restart your iPhone, just like it isn’t wise to rip the power cord out of a desktop computer.

But drastic times call for drastic measures. And if your iPhone 12 Pro Max keeps restarting or is stuck in a boot loop, sometimes the only way to fix it is using a force restart, also known as a hard reset. To Force restart your iPhone:
Quickly press and release the volume up button. Quickly press and release the volume down button. Press and hold the side button until the Apple logo appears on the screen.

Solution #7: Restore iOS Using a Computer

Speaking of drastic measures, if your iPhone 12 Pro Max keeps restarting after trying the above steps, it’s time to erase all your data and reinstall iOS. This could take an hour or more to do, so wait until you won’t need your iPhone for a while before getting started.

Solution #8: Inspect Your iPhone for Physical Damage

After restoring iOS, you can rule out software as the reason your iPhone 12 Pro Max keeps restarting. That leaves only hardware as the culprit, which means your iPhone probably needs a physical repair.

Inspect the outside of your iPhone looking for signs of damage. This could come in the form of scratches from an accidental drop, water marks from liquid damage, or broken pins inside the charging port.

It’s also worth going to Settings > Battery > Battery Health to see if your battery needs replacing.

Solution #9: Contact Apple

If your iPhone 12 Pro Max keeps restarting after trying the above steps, authorized Apple providers, like the Apple Store or Best Buy, are prepared to help you. You can simply make a Genius Bar reservation or contact Apple Support directly for assistance solving your iPhone’s specific issue. They can walk you through backing up your device, restoring to factory settings, and more. Reach out to a professional if you have any questions at all to ensure the problem is solved carefully and quickly.