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If your Android phone keeps restarting by itself, I know how frustrating it can be. You may be using an app, making a call, watching a video, or simply leaving the phone on the table when suddenly the screen goes black and the device starts again. Sometimes it happens once or twice, while in other cases the Android phone gets stuck in a restart loop and becomes almost impossible to use.
In my experience, random restarting does not always mean that the phone has a serious hardware problem. Many times, the reason is an unstable application, low storage, a software problem, overheating, a faulty charger, or an issue with the battery. The good news is that there are several things you can try before visiting a repair shop.
In this complete guide, I will explain the most practical solutions for an Android phone that keeps restarting and show you how to identify the actual cause.
Why Does My Android Phone Keep Restarting?
There can be several reasons behind unexpected Android restarts. The first thing I recommend is thinking about when the problem started.
If the phone began restarting after you installed a new application, that application could be responsible. If the problem started after a system update, there may be a temporary software issue. Low storage can also affect system performance, while overheating may cause the phone to restart to protect its internal components.
Other possible causes include an aging battery, damaged charging accessories, corrupted system files, physical damage, or a hardware component that is beginning to fail.
The important thing is not to assume the worst. Start with the simple solutions and move toward advanced troubleshooting only when necessary.
Step 1: Restart the Phone Properly
This may sound strange because the phone is already restarting, but if your Android device is currently working normally for a few minutes, perform a proper restart.
Press and hold the power button and select the restart option if it is available.
A normal restart can clear temporary system processes and may stop a minor software problem. If the phone restarts only occasionally, this simple step may be enough.
However, if the phone continues restarting repeatedly after a normal restart, move to the next solution.
Step 2: Check Your Phone Storage
Low storage is one of the problems that many people overlook.
Android needs some free storage space to operate properly. If your phone is almost completely full, applications and system processes may not work as expected.
Open Settings > Storage and check how much free space is available.
If your storage is nearly full, remove large videos, duplicate photos, old downloads, unused applications, and other files you no longer need.
I recommend keeping a reasonable amount of free space available instead of filling every last gigabyte. A cleaner storage system can also make your phone feel faster.
Step 3: Remove Recently Installed Apps
Think about which applications you installed shortly before the restarting problem began.
Some applications can contain bugs or may not work correctly with your particular Android version. If the restarting started after installing an unfamiliar application, uninstalling it is worth trying.
Go to Settings > Apps, find the application, and choose Uninstall.
After removing it, use the phone normally for a while and see whether the problem returns.
If the restarts stop, you have likely found the cause.
Step 4: Update Your Android Phone
An outdated version of Android can sometimes contain bugs that affect stability.
Open your phone’s settings and look for Software Update or System Update. If an official update is available, install it.
Before updating, make sure the battery has enough charge and that you have a stable internet connection.
You should also update your installed applications through the official app store. App developers regularly release updates to fix crashes and compatibility problems.
If your Android phone keeps restarting because of a software bug, an update may solve the issue without requiring a factory reset.
Step 5: Check for Overheating
Heat can cause unexpected restarts.
If your phone becomes very hot before restarting, pay attention to what you were doing at the time. Gaming, video recording, navigation, video streaming, and other demanding activities can place significant load on the processor.
Using the phone heavily while it is charging can also increase heat.
If the phone becomes unusually hot, stop demanding activities and let it cool down naturally. Avoid placing it in a refrigerator or freezer because sudden temperature changes can cause additional problems.
If overheating happens frequently even when you are doing simple tasks, the issue may require professional inspection.
Step 6: Try Safe Mode
Safe Mode is one of the most useful troubleshooting methods when an Android phone keeps restarting.
Safe Mode starts the phone with most third party applications temporarily disabled. The exact method for entering Safe Mode can vary depending on the manufacturer.
If your phone works normally in Safe Mode and stops restarting, a third party application is likely responsible.
You can then restart the phone normally and begin removing recently installed or suspicious applications one at a time.
This method is particularly helpful because it allows you to determine whether the problem is caused by Android itself or by an application you installed.
Step 7: Check the Battery
An old or damaged battery can cause unexpected shutdowns and restarts.
If your phone has been used for several years, the battery may no longer hold power as efficiently as it once did.
Pay attention to signs such as sudden drops in battery percentage, unexpected shutdowns, excessive heat, or the phone restarting when the battery level becomes low.
Some Android manufacturers provide battery health information or diagnostic tools in the settings.
If the battery is damaged or badly degraded, replacing it through a reliable service center may solve the restarting problem.
Do not attempt to open a sealed phone yourself unless you have the proper experience and equipment.
Step 8: Test Your Charger and Cable
Sometimes the problem is connected to charging accessories rather than the phone itself.
A damaged cable, poor quality charger, loose connection, or unstable power source can create charging problems and unusual behavior.
Try using a reliable charger and cable that are compatible with your device.
If your phone only restarts when connected to a particular charger, stop using that accessory and test another suitable charging setup.
This is a simple check, but it can save you from unnecessary troubleshooting.
Step 9: Remove Your Phone Case Temporarily
A phone case usually does not cause restarting problems, but a damaged or poorly fitting case can sometimes press against buttons.
If the power button is being pressed accidentally or feels stuck, the phone may repeatedly restart or shut down.
Remove the case and inspect the physical buttons.
Press the power button several times and check whether it feels normal. If it feels unusually tight, loose, or stuck, the button itself may need attention.
Step 10: Clear Problematic App Cache
If one application repeatedly crashes or behaves strangely, clearing its cache may help.
Go to Settings > Apps, select the application, then look for Storage and choose the option to clear the cache.
The exact menu names can vary between Android devices.
Clearing cache is different from clearing app data. Cache removal generally removes temporary files, while clearing app data can reset the application’s stored information.
I recommend starting with the cache option before taking more drastic steps.
Step 11: Reset App Preferences
If several applications are behaving incorrectly, resetting app preferences can sometimes help.
This does not normally delete your personal photos or files. Instead, it restores certain application settings and permissions to their default state.
The option can usually be found under the app management settings, although the location depends on the Android manufacturer.
This can be useful when a system setting or application permission has become incorrectly configured.
Step 12: Back Up Your Important Data
If your Android phone keeps restarting frequently, back up your important information before attempting advanced solutions.
Save your photos, contacts, documents, videos, and other important files to a secure location.
This is especially important before performing a factory reset.
I always recommend making a backup before major troubleshooting because software problems can sometimes become worse or make the phone temporarily inaccessible.
Step 13: Consider a Factory Reset
A factory reset should not be your first solution, but it can help when the problem is caused by serious software issues.
A factory reset removes personal data, applications, settings, and other information from the device and returns it to its original software state.
Before doing this, make sure your important files are backed up.
After resetting the phone, avoid immediately installing every application you previously had. Use the phone for a while and check whether the restarting problem returns.
If the phone works normally after the reset, a software or application issue was probably responsible.
When Should You Visit a Repair Center?
If your Android phone keeps restarting after a factory reset, the problem may be hardware related.
Possible causes can include a failing battery, damaged motherboard components, a faulty power button, liquid damage, charging problems, or other internal hardware issues.
You should also seek professional help if the phone becomes extremely hot, shows physical swelling, has suffered water damage, or shuts down during normal use.
I would avoid opening the phone yourself unless you have proper technical knowledge. Modern smartphones contain delicate components, and attempting an inexperienced repair can cause more damage.
Final Thoughts
When an Android phone keeps restarting, there is usually a reason behind it. The challenge is finding that reason without immediately spending money on repairs.
In my opinion, the best approach is to start with simple checks. Look at your storage, remove recently installed applications, update Android, check for overheating, test Safe Mode, and inspect the battery and charging accessories.
If those solutions do not work, backing up your information and considering a factory reset is the next logical step.
For an older phone, however, battery degradation or another hardware problem may eventually become the real cause. In that situation, a professional diagnosis can tell you whether replacing the battery or repairing the phone makes financial sense.
The main thing is to troubleshoot one step at a time. Do not change every setting at once because you may never know which solution actually fixed the problem. With a systematic approach, many Android restarting problems can be resolved without replacing the entire phone.
Frequently Asked Questions
Why does my Android phone keep restarting randomly?
Common reasons include problematic applications, low storage, software bugs, overheating, battery problems, and hardware faults. Checking battery usage, storage, recently installed apps, and software updates can help identify the cause.
Can low storage make an Android phone restart?
Yes. Extremely low storage can interfere with normal system and application operations. Freeing up storage is one of the first troubleshooting steps I recommend.
Will a factory reset stop my phone from restarting?
A factory reset can solve software related restarting problems, but it will not repair physical hardware faults such as a damaged battery or motherboard component.
How can I tell if an app is causing the problem?
Try Safe Mode. If the phone works normally without restarting in Safe Mode, a third party application is a likely cause. Remove recently installed applications and test the phone again.
Should I replace my Android battery if the phone keeps restarting?
If the phone is old, loses battery percentage unusually quickly, becomes hot, or restarts when the battery is low, a degraded battery could be responsible. A professional battery health check can help confirm the problem.
