Fix Your iPhone 17 Keeps Restarting in Simple Steps

Part 1. Why Does My iPhone Keep on Restarting on Its Own?

There are a few common reasons why your iPhone 17 keeps restarting:

• Software Bugs: Minor app or iOS 26 glitches may crash the system and force a restart. This is similar to issues seen when an iOS 16 iPhone keeps restarting after updates.
• Battery Problems: If the battery is weak or old, the iPhone may not get stable power. This can cause the iPhone 17 randomly restarts problem as well.
• Corrupted Apps or Data: Some apps may conflict with the iOS system, making the iPhone 17 pro max keeps restarting.
• System Updates: Users often report problems after installing updates, which is why many notice that their iPhone 17 Pro keeps restarting or iPhone 17 Pro Max randomly restarts unexpectedly.

So, if you are asking, “Why does my iPhone 17 keep restarting?” or facing the same with iPhone 17, the root cause is usually one of the above.

Part 2. 8 Simple Solutions to Fix Your iPhone 17 from Constantly Restarting

Here are 8 expert-tested fixes that work not just for iPhone 17, but also for iPhone 17 Pro Max restarting problems.

1. Update iPhone to the Latest iOS

One of the first things to try if your iPhone 17 keeps restarting is updating to the latest iOS 26. Software bugs can cause restarts, just like when an iOS 16 iPhone keeps restarting after updates. Go to Settings > General > Software Update and check for new versions. Installing the update fixes hidden glitches and improves performance.

2. Clear Out Unused Apps

Too many apps running in the background can overload your device, leading to restart loops. If your iPhone 17 Pro Max restarting problem or iPhone 17 keeps restarting, try deleting unused or suspicious apps. Go to Settings > General > iPhone Storage to see which apps take the most space. Removing heavy apps helps free memory and prevents crashes.

3. Fully Drain and Recharge the Battery

A weak battery may not supply steady power, which is why the iPhone 17 Pro Max randomly restarts or the iPhone 17 restarting randomly occurs. Letting your iPhone battery completely drain and then charging it back to 100% can recalibrate the power system. This process may fix restarts caused by poor battery management.

4. Take Out the SIM Card

Sometimes a faulty SIM card or network connection triggers restart loops. If your iPhone 17 keeps restarting even after updates, power off your phone and remove the SIM card. Keep it out for a few minutes before reinserting it. Users with iPhone 17 Pro Max restarting problems often find this step useful. If the issue disappears without the SIM, you may need a replacement card.

5. Perform a Hard Reset

A hard reset refreshes the iPhone system without erasing your data. This method often helps when the iPhone 17 randomly restarts or your iPhone 17 keeps restarting without warning. To perform it, quickly press and release Volume Up, then Volume Down, and finally hold the Side button until you see the Apple logo.

6. Restore iPhone Using iTunes

If your iPhone keeps restarting despite basic fixes, restoring it through iTunes may help. Connect your device to a computer, open iTunes, and select Restore iPhone. This process reinstalls iOS, fixing corrupted system files that cause the iPhone 17 Pro Max randomly restarts problem or when the iPhone 17 Pro keeps restarting frequently.

Step 1: Make sure iTunes on your computer is updated to the latest version. Connect your iPhone 17 to the computer using a USB cable.

Step 2: Open iTunes and go to the Summary tab. On the right side, click Restore iPhone.

Step 3: Click Restore and Update. iTunes will download the necessary software to fix your iPhone. This process may take about an hour.

Once completed, your iPhone will restart. You can then either restore your data from a backup or set it up as a new device.

7. Try Recovery Mode

Recovery Mode is useful when your device is stuck in a restart loop and won’t boot properly. If your iPhone 17 keeps restarting or the iPhone 17 restarting randomly, connect your phone to a computer, force restart it, and hold until the Recovery Mode screen appears. From there, choose Update or Restore in iTunes. This advanced fix helps when the iPhone 17 Pro Max restarting issue cannot be solved with normal resets.

8. Contact Apple Support

If none of the above methods work, the restart issue may be linked to hardware damage. This is common when the iPhone 17 Pro Max randomly restarts due to faulty batteries or motherboard problems. At this point, contacting Apple Support is the best choice. Their technicians can run diagnostics and repair the root cause.

Part 3. Easily Repair iPhone 17 Keeps Restarting Without Data Loss

While the above fixes help in many cases, some restart issues on iPhone 17 can be more stubborn and refuse to go away. If your iPhone 17 keeps restarting even after trying updates, resets, or removing the SIM card, the problem may be deeper within the iOS system. At this point, a professional repair tool is the safest option.

We recommend using UltFone iOS System Repair, as it can fix restart loops and system crashes effectively without erasing your photos, contacts, or important files.

Key Features of UltFone iOS System Repair:

• No Data Loss: Fixes restart issues while keeping your photos, contacts, and apps safe.
• One-Click iOS Downgrade: Easily downgrade iOS if needed, unlike iTunes resets.
• Fixes 150+ iOS Issues: From restart loops to black screens, boot failures, and stuck Apple logos.
• Works with iOS 26: Fully compatible with the iPhone 17 minimum operating system.
• Easy Backup and Restore: Backup your data before repair and restore it afterward with ease.

Steps to Fix iPhone 17 Keeps Restarting Using UltFone:

• Step 1Download and install UltFone iOS System Repair on your computer. Connect your iPhone 17 to the computer using a USB cable, then launch UltFone.

• Step 2From the main interface, select Standard Repair. UltFone will automatically detect your iPhone and prepare the necessary firmware package compatible with iOS 26.

• Step 3Click Download to get the latest iOS 26 firmware. Ensure your internet connection is stable and keep your iPhone connected during the process.

• Step 4Once the firmware is ready, click Start Standard Repair. UltFone will repair your system without erasing data.

• Step 5After completion, your iPhone 17 will restart and run smoothly on iOS 26.

Part 4. FAQ about iPhone 17 Keeps Restarting

1. Why does my iPhone 17 screen keep turning on?

The Always-On display is enabled by default. To turn it off, go to Settings > Display & Brightness > Always-On Display and disable it.

2. What causes a restart loop?

A restart loop can occur after faulty updates, corrupted firmware, or malware. This is often why the iPhone 17 Pro keeps restarting or the iPhone 17 Pro Max randomly restarts without warning.

3. How to stop iPhone from shutting off and on?

On iOS, go to Settings > Display & Brightness > Auto-Lock > Never to prevent the screen from turning off. Remember to change it later to save battery. This tip also helps reduce iPhone 17 randomly restarts issues.

4. How to fix iPhone stuck in boot loop?

Force restarts your iPhone. On iPhone 8 and later (including iPhone 17), quickly press and release Volume Up, then Volume Down, then hold the Side button until you see the Apple logo. This often works for iPhone 17 Pro Max restarting problems too.