Nothing is more frustrating than having your iPhone randomly shut off while there's still battery left. Many users have reported this issue, where their iPhone powers off at 50% or even 100% battery, only to restart and show a drop to 10%. You may wonder, why is my iPhone shutting off with battery left? This guide covers the possible reasons behind the issue and provides effective fixes to resolve it for good. Read on to find more details.
- Part 1. Why Is My iPhone Shutting Off with Battery Left?
- Part 2. How to Fix iPhone Shutting Off with Battery Left [Battery-Related]
- Part 3. How to Fix iPhone Shutting Down with Battery Left [System-Related]
- Part 4. How to Avoid iPhone Randomly Turns Off with Battery Left
- Part 5. Conclusion
Part 1. Why Is My iPhone Shutting Off with Battery Left?
It's alarming when your iPhone shuts down unexpectedly. If this happens while there's still battery left, it's usually due to battery health issues, software glitches, or environmental factors. Below, we explore the most common reasons your iPhone might be turning off suddenly.
Cause 1. Battery-Related Issues
A faulty or aging battery is the most common reason for iPhone shutting off randomly with battery left. Over time, iPhone batteries degrade, losing their ability to hold a charge properly. Physical damage—such as cracks, exposure to high temperatures, or water—can also impact battery performance. Additionally, sudden power fluctuations in a weak battery may cause your iPhone to shut down unexpectedly, even when it appears to have charge left.
Cause 2. System-Related Issues
Apart from battery problems, software-related glitches can also cause your iPhone to shut down abruptly. Corrupted system files, memory overload, or app conflicts can lead to iPhone random shutdowns. In some cases, iOS issues or bugs cause incorrect battery percentage readings, making your phone think it has more power than it actually does, leading to sudden shutdowns when the real charge is lower than displayed.
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Part 2. How to Fix iPhone Shutting Off with Battery Left [Battery-Related]
For older iPhone models like the iPhone 5, 6, 7, and 8, it's common to experience unexpected shutdowns with battery remaining due to battery-related issues. After using these devices for a long time, the battery may be degraded. To resolve this issue, you should check the battery status by following the steps below.
Method 1. Charge iPhone Again
Sometimes, your iPhone may not correctly register the remaining battery percentage. Charging your device for a few minutes can help recalibrate the battery reading. If your phone turns back on and functions normally after charging, it may have just needed a quick power boost. However, if the iPhone continues to shut down randomly with battery remaining, you can move on to the next method to check your iPhone's battery health.
Method 2. Check Battery Health
iPhone batteries wear out over time. You can check your battery's condition in the iPhone settings under the Battery tab. If the maximum capacity is below 80%, your battery may struggle to hold power, leading to sudden shutdowns. Here's how to check the iPhone battery health when you encounter the iPhone shuts down with battery left.
Step 1. Go to Settings and select the Battery tab.
Step 2. Find and choose the Battery Health option under the Battery page.
Step 3. Then you can check the Maximum Capacity.
Method 3. Replace Aging Battery
If recharging doesn't work for your iPhone or the battery health is significantly low, it may be time for a replacement. In some cases, people may even receive a message indicating the iPhone's battery is not verified as a genuine Apple battery. In such situations, replacing the aging battery can help prevent unexpected shutdowns. Apple offers battery replacement with original parts for optimal performance and longevity of your device.
Part 3. How to Fix iPhone Shutting Down with Battery Left [System-Related]
If you're using a relatively new iPhone, like the iPhone 14, 15, or 16, and haven't used it for long, a system issue is more likely causing the iPhone to shut down randomly with battery left. Luckily, several software fixes can help resolve the problem and restore your device to normal.
Method 1. Force Restart iPhone
A force restart helps refresh the iPhone system and clear minor glitches that may be causing iPhone to shut down with battery left. This method is quick and effective in resolving temporary software issues.
Method 2. Clear Running Apps
Having too many apps running in the background can overload your system and cause crashes. Closing unused apps helps free up system resources and prevents iPhone to unexpectedly shut down.
Step 1. Access the background app screen by swiping up from the bottom left of the screen.
Step 2. Clear all running apps by swiping them up to lessen the iPhone's running load.
Method 3. Free Up iPhone Storage
When your iPhone is running low on storage, it may struggle to function correctly and turn off finally. Deleting unnecessary files, apps, and caches can improve performance and prevent sudden shutdowns caused by system overload.
Option 1. Go to Settings, then navigate to General > iPhone Storage.
Option 2. Enable the Offload Unused Apps feature to automatically optimize iPhone storage.
Option 3. You can also scroll down to manage specific apps and free up storage.
Method 4. Update iOS Version
Outdated iOS versions often contain bugs that can lead to battery miscalculations and system instability. Updating your iPhone to the latest iOS version ensures you have the most recent bug fixes and performance improvements.
Step 1. Enter Settings, then General, and choose Software Update.
Step 2. If your iPhone needs to be updated, you will see the latest iOS version here.
Step 3. Press the Update Now button to update your iPhone to the latest iOS version.
Method 5. Repair iOS Issues
If your iPhone turns off with battery left after the above troubleshooting steps, then the MagFone iOS System Recovery can be a quick fix. MagFone iOS System Recovery offers a reliable and efficient solution to repair your iPhone's system and resolve common software problems causing random shutdowns. With just a few clicks, this tool can fix issues like system crashes, freezes, and abnormal shutdowns, restoring your iPhone to optimal performance. It works with all iPhone models and up to iOS 18. Here's how to use MagFone for iOS repair.
Key Features of MagFone iOS System Recovery
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- Fix various ios issues like screen stuck, mode stuch, and more
- Support updagrading and downgrading iOS without iTunes/Finder
- Offer two modes for resetting iPhone, iPad, and iPod touch
- Assist the entering and exiting of recovery mode for free
Step 1 Connect iPhone and Launch MagFone
The first step is to link your iPhone and your computer using a USB. Once connected, open the MagFone iOS System Recovery software. On the main page of that program, pick iOS System Repair and click Start to move on.
Step 2 Force Your iPhone into Recovery Mode
Next, choose the repair mode that fits your needs. If you want to preserve your data, select Standard Mode to fix the issue. After that, follow the instructions on the computer to put your iPhone into recovery mode or DFU mode.
Step 3 Download the Correct Firmware Package
Once the device details are displayed, verify that the information matches your iPhone model. If everything looks good, click the "Download" button to download the necessary firmware package onto your computer.
Step 4 Fix iPhone Shutting Off with Battery Left
After the firmware package is downloaded, click Start Standard Repair to initiate the fix. During this process, remember to keep your iPhone connected to the computer. Once the repair is completed, your iPhone shutdown issue will be fixed.
Method 6. Erase This iPhone
The last resort you can use is to reset your iPhone to factory settings. This removes any problematic software configurations that might be causing shutdown issues. Before performing a factory reset, remember to back up your data.
Step 1. Head to Settings and then choose the General option.
Step 2. Tap Erase All Content and Settings. Next, choose Continue to proceed.
Step 3. You'll need to tap Erase iPhone to confirm your erase action.
Part 4. How to Avoid iPhone Randomly Turns Off with Battery Left
To prevent your iPhone from shutting down with battery remaining, it's essential to maintain both your battery and system health. Following these tips will help extend your device's lifespan and ensure it runs smoothly.
Tip 1. Monitor Battery Health
Regularly checking your battery health can help you identify early signs of degradation. Avoid overusing your iPhone, especially while charging, and try not to drain the battery to 0% too often. Keeping the charge between 20% and 80% helps prolong battery life and prevents unexpected shutdowns.
Tip 2. Use an Original Charger
Using third-party or cheap chargers can damage your battery and cause power fluctuations. Always use Apple-certified chargers to ensure safe and efficient charging. Counterfeit chargers may cause overheating or improper battery calibration, leading to random shutdowns on your iPhone.
Tip 3. Avoid Extreme Temperatures
Exposing your iPhone to extreme heat or cold can affect battery performance. High temperatures can cause overheating and battery swelling, while cold temperatures can reduce battery efficiency, leading to sudden shutdowns. Always use your iPhone in a moderate temperature range to maintain optimal performance.
Part 5. Conclusion
In conclusion, if your iPhone is shutting down unexpectedly with battery left, it could be due to battery or system-related issues. By regularly checking your battery health, performing software fixes, and following preventive measures, you can minimize the chances of random shutdowns. If the issue persists, using tools like MagFone iOS System Recovery or replacing the battery can help restore your device's functionality and keep it running smoothly.
Teresa Miller
Editor in chief
