What to do if your Samsung phone keeps restarting
If your Galaxy phone restarts on its own, it may be caused by Auto restart settings, unstable third-party apps, or recent software updates. This guide helps you identify the cause and provides step-by-step solutions to stop unexpected restarts.
Cause 1: Auto restart is enabled in Device care
Symptoms
- Phone restarts at scheduled times without notice
- Restart occurs even when battery is charged
- Restarts may repeat or happen at specific times
Why this happens
Auto restart helps keep your device running smoothly by restarting at scheduled times. If enabled unintentionally, it can cause unexpected restarts.
How to turn off Auto restart:
Step 1. Select Settings, then select Device care.
Step 2. Select Auto optimisation.
Step 3. Tap Auto restart.
Step 4. Turn off Restart when needed and Restart on schedule.
Note: Auto restart works only when the screen is off, device is not in use, battery is above 30%, and SIM card lock is off.
Cause 2: Unstable third-party apps or recent software updates
Symptoms
- Phone restarts randomly during normal use
- Restart pattern is irregular
- Issue started after installing or updating apps
Why this happens
Some apps may interfere with system functions or use excessive memory. Critical software updates can also trigger automatic restarts.
How to remove recently installed or suspicious apps
Step 1. Select Settings, then select Apps.
Step 2. Find and select the suspected app.
Step 3. Tap Uninstall, then confirm.
Tips:
- Focus on apps installed when the issue began, especially from unknown developers.
- Uninstall apps one by one, starting with the most recent, and test after each removal.
- Example app names in guides are hypothetical and may not exist.
Run a diagnostic test using Samsung Members app
- Open the Samsung Members app.
- Use Phone diagnostics to check for restart-related issues.
Note:
- Phone diagnostics are available on Galaxy devices with Samsung Members installed.
- You can run a full test or select specific components.
- Reboots after critical updates are normal and maintain device security.
- If you skip restarts for long periods, device performance may be affected.
- Device menus and screenshots may vary by model and software version.
- Enabling Auto restart can help maintain optimal performance.
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