iPhone Keeps Restarting? Here’s How to Fix It
Few things are more annoying than an iPhone that keeps restarting over and over again. One moment it works normally, and the next, the Apple logo appears and the phone reboots by itself.
Sometimes the iPhone restarts randomly every few minutes. Other times, it gets stuck in a boot loop and never fully turns on.
The good news is that many restart issues are caused by software problems, not hardware damage. In this guide, you’ll learn the most effective fixes to stop your iPhone from restarting constantly.
Why Does My iPhone Keep Restarting?
An iPhone may restart repeatedly because of:
- iOS software bugs
- Failed updates
- Low storage space
- Battery health issues
- Overheating
- Faulty apps
- Water damage
- Hardware failure
The issue may begin after installing an iOS update, charging overnight, or dropping the device.
1. Force Restart Your iPhone
A force restart can quickly fix temporary system crashes.
For iPhone 8 and newer:
- Press and release Volume Up
- Press and release Volume Down
- Hold the Side button until the Apple logo appears
For iPhone 7 Series:
Hold Volume Down + Power button together.
For iPhone 6s and older:
Hold Home + Power button together.
This refreshes the system without deleting data.
2. Check iPhone Storage
Low storage can make iOS unstable and cause random restarts.
Go to:
Settings → General → iPhone Storage
If your storage is nearly full:
- Delete unused apps
- Remove large videos
- Clear downloads
- Offload unnecessary files
Keeping free space available helps prevent crashes and reboot loops.
3. Update iOS
Software bugs are one of the most common reasons iPhones restart unexpectedly.
Go to:
Settings → General → Software Update
Install the latest version available. Apple frequently releases updates that fix reboot and performance issues.
4. Remove Recently Installed Apps
If the restart problem started after installing a new app, the app may be causing system crashes.
Try:
- Deleting suspicious apps
- Removing beta apps
- Uninstalling unofficial apps
Gaming, VPN, and battery-related apps sometimes create stability problems.
5. Check Battery Health
A weak battery can cause unexpected shutdowns and restart loops.
Go to:
Settings → Battery → Battery Health & Charging
If battery health is very low or shows a service warning, replacing the battery may solve the issue.
Official battery service is available through Apple and authorized repair centers.
6. Remove the Charger
Cheap or damaged chargers may trigger random restarts while charging.
If the iPhone only restarts when plugged in:
- Change the charging cable
- Use an original adapter
- Avoid damaged charging ports
Using certified accessories helps maintain stable power delivery.
7. Check for Overheating
Overheating can force the iPhone to shut down and restart automatically.
This commonly happens during:
- Gaming
- Charging
- Video editing
- Hot weather usage
If the iPhone feels hot:
- Remove the case
- Stop charging
- Let it cool down naturally
8. Reset All Settings
Corrupted system settings may lead to restart issues.
Go to:
Settings → General → Transfer or Reset iPhone → Reset → Reset All Settings
This won’t erase photos or apps, but it resets:
- Wi-Fi
- Bluetooth
- Keyboard settings
- Display settings
9. Restore Your iPhone Using Finder or iTunes
If the problem continues, reinstalling iOS can fix deeper software corruption.
On Mac:
Use Finder
On Windows:
Use iTunes
Steps:
- Connect the iPhone to a computer
- Enter Recovery Mode
- Choose Update first
- If needed, select Restore
Always back up your iPhone before restoring.
10. Check for Water Damage
Water damage can affect internal components and cause continuous restarting.
Signs include:
- Restart loops
- Screen flickering
- Heating issues
- Charging problems
If your iPhone got wet recently:
- Turn it off
- Avoid charging
- Let it dry completely
11. Remove Beta Profiles
If you installed an iOS beta version, instability may cause reboot problems.
Go to:
Settings → General → VPN & Device Management
Remove:
- Beta profiles
- Unofficial configuration profiles
Then restart the device.
12. Hardware Damage May Be the Real Cause
If none of the fixes work, hardware failure may be responsible.
Possible causes:
- Damaged motherboard
- Faulty battery
- Loose internal connector
- Drop damage
Professional repair may be necessary in severe cases.
iPhone Stuck in Boot Loop?
A boot loop means the iPhone continuously shows the Apple logo and restarts without fully turning on.
Common fixes include:
- Force restart
- Recovery Mode update
- Full restore
- Battery replacement
If the device still won’t boot properly, hardware diagnostics may be required.
FAQs
Why does my iPhone keep restarting randomly?
Software bugs, low storage, battery problems, overheating, or faulty apps are the most common causes.
Can low battery health cause restart issues?
Yes. A degraded battery may fail to provide stable power, causing unexpected restarts.
How do I stop my iPhone from rebooting constantly?
Try force restarting the device, updating iOS, freeing storage, removing problematic apps, and restoring the system if needed.
Why does my iPhone restart while charging?
Faulty chargers, damaged cables, or battery issues can trigger random restarts during charging.
Can water damage cause boot loops?
Yes. Moisture inside the phone can damage internal components and create continuous restart problems.
