Why Your Android Phone Keeps Restarting and How to Fix It (2026)

An Android phone that keeps restarting on its own is frustrating, whether it happens mid-call, mid-scroll, or right when you are typing something important. This is often called a random restart, and in more serious cases, a boot loop, where the phone never fully starts and keeps cycling back to the logo screen. Most causes are software related and fixable at home, but a few point to a hardware problem that needs professional attention. This guide walks through both.

Common Causes of Random Restarts

Before fixing the problem, it helps to know what is likely causing it:

• Software glitches after a recent update, including early or beta versions of a new Android release.
• Faulty or incompatible apps running in the background, especially ones recently installed.
• Low or full storage, which can cause system tasks to fail and trigger a restart.
• Corrupted system files or a buggy system cache.
• Overheating from heavy use, direct sunlight, or charging while gaming.
• A weak or swollen battery, particularly on older phones.
• Malware or a compromised app, especially if the phone is rooted or apps were installed from outside the Play Store.
• Faulty hardware, such as a stuck power button or motherboard damage.

How to Fix an Android Phone That Keeps Restarting

1. Restart in Safe Mode

Safe Mode temporarily disables all third-party apps on your Android device, which helps you isolate whether an app is causing the restarts. If the phone runs normally in Safe Mode, a third-party app is likely the culprit.

1. Hold the power button.
2. Tap and hold Power Off until you see Reboot to Safe Mode.
3. Select it and let the phone restart.

If the phone still restarts in Safe Mode, the cause is more likely a system issue than a specific app. If it stops restarting, exit Safe Mode and uninstall any apps you installed recently, one at a time, checking after each one.

2. Check for Software Updates

Outdated software on your Android phone can introduce bugs that trigger unexpected restarts. Making regular software updates a habit improves stability, security, and performance, and often resolves this issue outright.

• Go to Settings > System > Software Update.
• Download and install any pending update.

3. Free Up Storage Space

A phone running close to full storage can struggle to complete background system tasks, which shows up as slowdowns, crashes, and restarts. Go to Settings > Storage and check how much free space you have. If it is under 10 percent, delete unused apps, clear downloaded files, and move photos or videos to cloud storage or an SD card if your phone supports one.

4. Uninstall Problematic Apps

Poorly coded or unoptimized apps are a common cause of crashes and restarts, and this includes some “booster” or “battery optimizer” apps that run constant background monitoring.

• Go to Settings > Apps.
• Sort apps by recently installed.
• Uninstall any suspicious or unnecessary ones, one at a time.

5. Clear the Cache Partition

An overfilled system cache can contribute to boot loops. Clearing it does not delete your personal data.

1. Power off your device.
2. Hold Volume Up + Power (button combination varies by brand) to enter recovery mode.
3. Use the volume buttons to navigate to Wipe Cache Partition and select it.
4. Reboot the device.

6. Watch for Overheating

Phones are designed to automatically shut down or restart to prevent heat damage to internal components and the battery. If your phone feels unusually hot before it restarts, this is likely the cause. To avoid it:

• Avoid charging while gaming or recording video.
• Remove thick cases during charging or extended use in direct sunlight.
• Use original or certified chargers only.

7. Check Your Battery Health

For phones with a removable battery, check that it fits snugly and is not swollen or misshapen. For phones with a sealed battery, go to Settings > Battery to check its condition, or use a diagnostic app that reports battery health. A degraded battery that cannot supply consistent power is a common cause of random restarts on older phones and should be replaced.

8. Rule Out Malware

If restarts started after installing an app from outside the Play Store, or your phone is rooted, malware could be the cause. Run a scan with a trusted security app and remove anything flagged. See our guide on how to protect your Android phone from malware for prevention steps going forward.

9. Factory Reset (Last Resort)

If nothing above resolves the issue, a factory reset restores your phone to its original settings and often clears deep software glitches. This erases all data and settings, so back up anything important first.

• Back up your data.
• Go to Settings > System > Reset > Factory Data Reset.

When to Seek Professional Help

If your phone keeps restarting even after a factory reset, or it is stuck in a full boot loop and never reaches the home screen, this points to a hardware issue rather than software. Common culprits include a power button stuck in the pressed position, physical damage from a drop or water exposure, or motherboard damage. At this point, visit an authorized service center rather than continuing to troubleshoot at home.

Prevention Tips

• Install apps only from the Google Play Store.
• Keep your device and apps updated.
• Keep at least 10 to 15 percent of your storage free.
• Avoid overheating by limiting background apps and heavy use while charging.
• Use good-quality, original charging accessories.

Frequently Asked Questions

What is the difference between a random restart and a boot loop?
A random restart happens occasionally while you are using the phone normally, and it comes back on and works fine. A boot loop means the phone never fully starts, cycling back to the logo screen repeatedly, which usually points to a more serious software or hardware fault.

Can low storage really cause my phone to restart?
Yes. When storage runs low, background system processes can fail to complete, which can trigger slowdowns, crashes, and restarts.

Will a factory reset definitely fix random restarts?
It fixes most software-related causes, but if restarts continue after a factory reset, the issue is likely hardware related and needs professional repair.

A phone that restarts on its own is disruptive, but most cases are fixable without any technical expertise or cost. Work through the software fixes above before considering hardware repair, and you will likely have your device stable again well before you need to visit a service center.