How To Fix A Galaxy S25 Boot Loop Or Constant Restarts (2026)

If your Galaxy S25 keeps restarting by itself or freezes on the Samsung logo, the phone is caught in a boot loop.

This is usually a software problem, and in most cases you can fix it without losing your photos and files.

The steps below run from the gentlest fix to the most drastic one, and most take under 10 minutes.

Which fix matches your symptom?

Find the line that matches what your S25 is doing, then jump to that step.

What order should you try the fixes in?

Work left to right, and stop as soon as the phone starts normally.

Step 1: Force restart the phone

A forced restart clears a stuck startup without touching your data.

1. Press and hold the Side key and the Volume down key at the same time.
2. Keep holding both for more than 7 seconds, per Samsung’s reboot guidance.
3. Let go when the screen goes dark and the logo returns.

Step 2: Charge the phone before anything else

A nearly empty battery can make a phone restart repeatedly, and the recovery menu needs enough charge to work.

• Plug into a wall charger, not a computer or hub.
• Leave it for at least 30 minutes before trying again.
• Try a different cable if the phone shows no charging sign.

AT&T’s Galaxy S25 FE recovery guide asks for at least 30% charge before entering recovery mode.

Step 3: Is a recently installed app causing the loop?

Safe mode stops third-party apps from running, so a bad app cannot trigger the crash.

1. Power the phone off completely.
2. Turn it on, and when the Samsung logo appears, hold the Volume down key.
3. Look for “Safe mode” in the bottom-left corner of the screen.
4. Uninstall the apps you added or updated just before the loop began.
5. Restart the phone to leave Safe mode.

These steps come from Samsung’s Safe mode page, which notes that leaving Safe mode may reset some customizations such as wallpapers and themes.

If the phone gets stuck in Safe mode instead, see our guide to the Galaxy S25 Plus stuck in Safe mode.

Step 4: Wipe the cache partition from recovery mode

This removes temporary system files, and Samsung-model guides describe it as leaving personal data alone.

1. Power the phone off.
2. Hold Volume Up and the Side key together until the screen turns on, as in AT&T’s S25 FE steps.
3. Many S25 guides say to connect the phone to a computer with a USB-C cable first, so try that if the menu will not appear.
4. Use Volume down to highlight Wipe cache partition and press the Side key.
5. Choose Reboot system now.

Menu wording can differ by model and software version, and AT&T’s S25 FE page lists only the factory reset option.

Step 5: Free up storage if the phone boots for a moment

A nearly full phone can fail during startup or an update.

1. Open Settings.
2. Tap Battery and device care.
3. Tap Storage.
4. Delete large files and unused apps, then restart.

Step 6: Reset all settings

This puts every setting back to default while keeping your apps and personal data.

1. Open Settings, then General management, then Reset.
2. Tap Reset all settings.
3. Review the information, tap Reset settings, then tap Reset to confirm.

The phone restarts afterward, per Samsung’s reset steps.

Step 7: Use Smart Switch emergency software recovery

If the phone shows an emergency recovery screen after a failed update, Samsung’s computer tool can reinstall the software.

1. Install Smart Switch on a computer and connect the phone by cable.
2. Open Smart Switch and choose More at the top right.
3. Select Emergency Software Recovery and Initialization.
4. Pick your phone from the list and follow the prompts.

Samsung’s emergency recovery guide does not say whether data is kept, so assume you could lose it and back up first if you can.

Step 8: Factory reset as a last software fix

A factory reset wipes the phone and is the strongest software fix.

1. If the phone boots, open Settings, then General management, then Reset, and tap Factory data reset.
2. If it does not boot, enter recovery mode as in step 4 and choose Wipe data/factory reset.
3. Confirm, then wait for the phone to restart to setup.

What do the recovery menu options do?

When should you contact Samsung?

If the loop continues after a factory reset, the cause may be hardware.

Samsung offers 24/7 live chat and a repair service through its support site.

If your phone will not even power on, read how to fix a Galaxy S25 that won’t turn on, and for a loop that began after an update see our boot loop after update guide.

Once it runs again, our battery drain guide helps you check that nothing else is wrong.