iPhone 13 Keeps Turning Off Suddenly? Battery & Power Reset Methods

Does your iPhone 13 keep turning off suddenly without any warning or battery low alert? This unexpected issue can be incredibly frustrating — especially when your phone powers down during calls, app usage, or while charging. Sudden shutdowns are often linked to battery calibration problems, iOS bugs, or even faulty power management hardware.

Fortunately, this issue is fixable. In this guide, we’ll walk you through why iPhone 13 keeps turning off suddenly, explore both software and hardware causes, and provide effective battery and power reset methods to restore your iPhone’s reliability.

For complex cases, expert technicians at Milaaj Mobiles and Laptop Repair Al Barsha can diagnose and repair your iPhone professionally, ensuring long-term stability.

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Why iPhone 13 Keeps Turning Off Suddenly

When your iPhone 13 keeps turning off suddenly, there’s usually an underlying cause disrupting its power management system. Let’s examine the most common reasons behind this problem.

1. Battery Health Deterioration

Over time, lithium-ion batteries degrade. As a result, they may fail to provide consistent voltage, causing the iPhone to shut down abruptly — even when the battery indicator shows sufficient charge.

2. iOS Software Bugs for iPhone 13 keeps turning off suddenly

Sometimes, an iOS update or corrupted software process causes system instability. Consequently, your iPhone may reboot randomly or turn off without prompt.

3. Overheating or Thermal Shutdown

If your iPhone overheats due to gaming, charging, or background processes, the system automatically turns off to protect internal components.

4. Power Management IC (PMIC) Issues

Hardware faults in the Power Management Integrated Circuit can disrupt energy distribution. Therefore, even a minor IC fault can cause random shutdowns.

5. Faulty Apps or Background Processes

Poorly optimized apps or continuous background refreshes can overload system resources. As a result, the iPhone may crash or shut off suddenly.

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Signs Your iPhone 13 Keeps Turning Off Suddenly Due to Power Issues

Recognizing the signs helps you pinpoint whether the issue is software-related or hardware-based.

• iPhone shuts off even when battery level is above 20%.
• The device restarts automatically after a sudden shutdown.
• It only stays on while plugged into a charger.
• The battery percentage fluctuates rapidly.
• The screen freezes before powering off.

If you notice these signs frequently, your iPhone 13 keeps turning off suddenly due to a deeper issue requiring troubleshooting.

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Step-by-Step Fixes When iPhone 13 Keeps Turning Off Suddenly

Below are detailed troubleshooting methods to identify and resolve both software and battery issues.

1. Perform a Force Restart

A force restart clears temporary glitches without deleting data. Firstly, try this basic yet effective fix:

Steps:

1. Quickly press and release the Volume Up button.
2. Quickly press and release the Volume Down button.
3. Hold the Side button until you see the Apple logo.

As a result, your iPhone will reboot and clear temporary system faults that might cause shutdowns.

2. Check Battery Health

Apple’s Battery Health feature gives insight into your battery’s performance. Therefore, checking it helps you determine if your battery is causing sudden power loss.

To check:

• Go to Settings → Battery → Battery Health & Charging.
• Check Maximum Capacity and Peak Performance Capability.

If the capacity is below 80% or the message says, “Performance management applied,” it means the battery can’t deliver enough power.

Consequently, you should consider battery replacement at a certified service center.

3. Update iOS

Outdated or buggy software often causes system instability. Thus, updating your iPhone to the latest iOS version can fix the problem.

Steps:

• Go to Settings → General → Software Update.
• Tap Download and Install if an update is available.

Furthermore, ensure your iPhone has sufficient charge and is connected to Wi-Fi before updating.

4. Delete Problematic Apps

Faulty or incompatible apps can also make your iPhone 13 keeps turning off suddenly. Hence, identify and remove suspicious apps recently installed.

To do this:

• Open Settings → Battery and check for any app consuming excessive power.
• Delete the app if it’s using abnormal battery percentage or running continuously in the background.

As a result, this helps stabilize your device and prevent crashes.

5. Reset All Settings For iPhone 13 keeps turning off suddenly

If your iPhone’s system preferences or power configurations are corrupted, resetting all settings can help. However, this won’t erase personal data.

Steps:

• Go to Settings → General → Transfer or Reset iPhone → Reset → Reset All Settings.
• Enter your passcode and confirm.

Consequently, network, privacy, and display settings revert to default — often resolving software-triggered shutdowns.

6. Calibrate the Battery

If your iPhone shuts down even when showing 30–40% battery, calibration might help realign battery reporting with actual capacity.

To calibrate:

1. Use your iPhone until it shuts off automatically.
2. Charge it to 100% without interruptions.
3. Leave it plugged in for 1 extra hour.
4. Restart the phone and use normally.

As a result, battery level readings become accurate and sudden shutdowns reduce.

7. Disable Background App Refresh

Too many background processes can overload the battery and processor. Therefore, turning off unnecessary refreshes can prevent instability.

Steps:

• Go to Settings → General → Background App Refresh → Off.

Additionally, close unused apps from the App Switcher to reduce load.

8. Restore via iTunes or Finder

If software corruption persists, restoring your iPhone through iTunes (Windows) or Finder (Mac) can help. Thus, this method reinstalls iOS from scratch.

Steps:

1. Connect your iPhone to your computer.
2. Open iTunes/Finder.
3. Select your device → Click Restore iPhone.

As a result, your iPhone gets a clean software start, often fixing deep system errors.

9. Check for Hardware Faults

If none of the above methods work, the issue might lie in the battery connector, power IC, or logic board. Hardware faults can cause sudden shutdowns despite proper charge levels.

In that case, it’s best not to attempt self-repair. Instead, consult professionals like Milaaj who specialize in iPhone hardware diagnosis and component-level repair.

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Professional Repair Help at Milaaj

If your iPhone 13 keeps turning off suddenly, even after performing all resets, expert help is the best option.

At Milaaj, skilled technicians use advanced diagnostic tools to assess:

• Battery health and performance.
• Power Management IC (Tristar/PMIC) condition.
• Logic board and circuit faults.
• Software anomalies causing power failure.

They offer services like:

• Battery replacement using genuine parts.
• Power IC repair at the micro-level.
• Logic board re-soldering and component testing.
• iOS reinstallation and performance optimization.

Consequently, you get your iPhone restored to full reliability with stable power performance and extended battery life.

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Preventive Measures to Avoid Sudden iPhone Shutdowns

Once your device is fixed, follow these preventive steps to ensure it doesn’t happen again.

1. Avoid using while charging, as it causes heat buildup.
2. Charge between 20%–80% to protect battery health.
3. Keep iOS updated to the latest version.
4. Avoid third-party charging cables or adapters.
5. Monitor background apps that consume power excessively.
6. Avoid direct sunlight or hot environments during use.

By following these practices, you can prevent your iPhone 13 keeps turning off suddenly issue from recurring.

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When to Seek Professional Help

You should seek expert diagnosis if:

• Your iPhone shuts down repeatedly even after full charge.
• It doesn’t turn on unless plugged in.
• Battery health is below 80%.
• The device gets unusually hot or freezes often.

At this stage, it’s best to visit Milaaj for comprehensive testing and professional repair.

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FAQs About iPhone 13 Keeps Turning Off Suddenly

1. Why does my iPhone 13 keep shutting off randomly?
It could be due to a weak battery, software bug, or faulty power IC.

2. Will resetting my iPhone delete my data?
Resetting all settings won’t erase data, but restoring via iTunes will. Always back up before restoring.

3. How do I know if my iPhone battery needs replacement?
Check Settings → Battery Health. If it’s below 80%, replace it.

4. Can overheating cause shutdowns?
Yes, iPhones shut down automatically to prevent damage from heat.

5. Where can I fix this issue in Dubai?
Visit Milaaj for professional diagnosis and genuine repairs.

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iPhone 13 keeps turning off suddenly

Dealing with an iPhone 13 keeps turning off suddenly issue can be stressful, but the problem is usually fixable. From battery recalibration and iOS updates to power IC inspections, the right troubleshooting steps can restore your iPhone’s reliability.

However, if none of the DIY solutions work, it’s time to let professionals handle it. At Milaaj Mobiles and Laptop Repair Al Barsha, certified experts can accurately diagnose and repair battery, IC, or software problems using advanced tools and genuine components.

With proper repair and maintenance, your iPhone 13 can perform like new — without unexpected shutdowns interrupting your day.

Other Services:

• Need other iPhone repairs? Check out Milaaj’s iPhone repair services in Dubai.
• Looking to upgrade? Learn about selling your used iPhone in Dubai.
• Data loss concerns? Visit Milaaj’s data recovery services.
• For Apple users, check Apple trade-in options in Dubai.

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📍 Visit Any Milaaj Branch in Dubai

Shop Locations: Al Barsha | Bur Dubai | Reef Mall, Salah Al Din | Al Nuaimiya, Ajman
Email: support@milaaj.com
Operating Hours: Monday – Sunday