If your Android phone keeps restarting on its own, it can be frustrating and disruptive. The device may reboot randomly during calls, gaming, browsing, or even when idle. This issue occurs due to software glitches, overheating, battery problems, corrupt apps, or sometimes hardware faults.
The good news is that you can fix most automatic restarting issues with simple troubleshooting steps. This guide explains all the effective methods to fix phone automatically restarting issue on Android.

Restart Your Phone Manually

Although your phone is restarting automatically, a proper manual reboot can reset system processes.

Steps:

1. Press and hold the Power button.
2. Tap Restart.
3. Wait for the device to reboot fully.

Check for Overheating

Phones restart automatically when they reach high temperatures to prevent hardware damage.

Tips:

• Remove the case temporarily
• Stop heavy apps or games
• Avoid charging while using the phone
• Let the device cool down

Check if the problem continues after cooling.

Update All Apps

Outdated apps may contain bugs that can cause random reboots.

Steps:

1. Open Google Play Store.
2. Tap your profile icon.
3. Select Manage apps & device.
4. Tap Update All.

Uninstall Suspicious or Recently Installed Apps

Faulty or malicious apps can trigger automatic reboots.

Steps:

1. Open Settings.
2. Tap Apps.
3. Sort apps by recently installed.
4. Uninstall apps added before the issue started.

Be cautious with apps downloaded from outside the Play Store.

Check Battery Health (If Supported)

A damaged or swollen battery can cause your phone to reboot unexpectedly.

Check for signs:

• Battery draining too fast
• Phone getting hot frequently
• Swelling or bulging back cover

If battery health is low, replacement may be necessary.

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Clear Cache Partition (If Supported)

Clearing the system cache removes corrupted temporary files that may cause instability.

Steps (varies by device):

1. Turn off your phone.
2. Boot into Recovery Mode (Power + Volume Up/Down).
3. Select Wipe Cache Partition.
4. Reboot the device.

This does not delete personal data.

Free Up Storage Space

Low storage can make the system unstable and cause random restarts.

Steps:

1. Open Settings.
2. Tap Storage.
3. Remove:

• Large videos
• Unneeded apps
• Temporary files
• Downloaded files

Keep at least 2–3 GB free space.

Disable Auto-Reboot (Some Devices)

Some Android models have an auto-restart feature.

Steps:

1. Open Settings.
2. Tap Battery or Device Care.
3. Look for Auto Restart.
4. Turn it OFF.

Update Android System

System updates often include bug fixes that address random restarting issues.

Steps:

1. Open Settings.
2. Tap System.
3. Select System Update.
4. Install any available updates.
5. Restart your device.

Boot in Safe Mode

Safe Mode disables all third-party apps. This helps identify if an app is causing the issue.

Steps:

1. Hold the Power button.
2. Long-press Restart.
3. Tap OK to enter Safe Mode.

Let the phone run for a while.
If it does not restart, uninstall problematic apps after rebooting normally.

Check for Hardware Problems

Random restarts may happen because of:

• Loose battery connection
• Faulty power button
• Damaged motherboard
• Water damage
• Internal component failure

If your device was dropped recently or exposed to water, hardware may be the cause.

Reset All Settings

Incorrect settings can sometimes cause instability.

Steps:

1. Open Settings.
2. Tap System.
3. Select Reset Options.
4. Tap Reset All Settings.

Your data remains safe.

Factory Reset (Last Option)

If none of the methods work, perform a full reset.

Steps:

1. Backup your data.
2. Go to Settings → System → Reset.
3. Tap Factory Data Reset.

This removes all software issues, but use only as the final option.

When to Visit a Service Center

Seek professional help if:

• Phone still restarts after a factory reset
• Battery is swollen or damaged
• Phone restarts when moved or pressed
• There is water damage
• System crashes repeatedly

A technician can diagnose hardware and replace faulty components.

Conclusion

Phone automatically restarting issue on Android is usually caused by faulty apps, overheating, low storage, outdated software, or battery problems. By following the steps in this guide—removing problematic apps, updating system software, clearing cache, disabling auto-restart, and checking battery health—you can fix most reboot issues easily.
If the problem continues, it may be a hardware issue requiring professional repair.