Troubleshoot Galaxy S24 Random Rebooting or Crashing Issues Guide

Random reboots and crashes on the Samsung Galaxy S24, S24+, and S24 Ultra are a well-documented problem that surged in reports after the One UI 7 update rollout in early 2025. The most common triggers are a corrupted system cache following a firmware update, a third-party app running unchecked in the background, or a thermal event caused by an overheating Snapdragon 8 Gen 3 processor. In most cases, you can fix this without a factory reset — start with the steps below in order, testing after each one.

Quick Summary: Most Common Causes

Cause	Who It Affects	Quick Fix
Corrupted cache after OTA update	All S24 models after any major update	Wipe cache partition
Rogue third-party app	Any device with recently installed apps	Boot into Safe Mode
One UI 7 software bug	S24 / S24+ / S24 Ultra on One UI 7.0	Install latest security patch
Overheating / thermal shutdown	All models, especially during charging + use	Disable background sync, reduce brightness
Hardware fault (battery/motherboard)	Older units or physically damaged devices	Samsung service center

Fix 1: Check for a Pending Software Update (Start Here)

As of 2026, Samsung has released multiple patches specifically addressing random restart bugs introduced in One UI 7. Before doing anything else, make sure you’re on the latest firmware.

Go to Settings → Software update → Download and install. If an update is available, install it and test for 24 hours. Multiple users in the Samsung Community forums confirmed that monthly security patches in mid-2025 resolved their random restart loops without any additional steps needed.

If your phone is crashing too frequently to stay on long enough to update, hold the Power and Volume Down buttons simultaneously for 10 seconds to perform a force restart, then immediately navigate to Software update before opening any apps.

Fix 2: Boot Into Safe Mode to Isolate a Bad App

Safe Mode disables all third-party apps while keeping core Samsung software running. If your S24 stops rebooting in Safe Mode, a downloaded app is the culprit.

How to enter Safe Mode on Galaxy S24:

1. Press and hold the Power button until the power menu appears
2. Tap and hold the Power off option on screen
3. When prompted, tap Safe Mode
4. Your phone reboots with “Safe mode” shown in the bottom-left corner

Test for at least 15–30 minutes. If the random reboots stop, you have a bad app. To find it:

• Think about any app you installed or updated in the days before the rebooting started
• Go to Settings → Apps, sort by install date, and uninstall recent additions one at a time
• Known problem apps historically include aggressive battery optimizer apps, certain VPNs, and third-party launchers that conflict with One UI

To exit Safe Mode, simply restart the phone normally.

Fix 3: Wipe the System Cache Partition

A corrupted cache partition is the #1 cause of random reboots after a major Android or One UI update. Wiping it is safe — it does not delete your apps, photos, or personal data.

Steps to wipe cache partition on Galaxy S24:

1. Power off the phone completely
2. Press and hold Volume Up + Power simultaneously until the Samsung logo appears, then release both buttons
3. Use the Volume Down button to scroll to Wipe cache partition
4. Press the Power button to select it
5. Scroll to Yes and press Power to confirm
6. Once complete, scroll to Reboot system now and press Power

The phone will restart. The first boot after a cache wipe takes slightly longer — this is normal. Test for a full day before moving on.

Fix 4: Reset All Settings (Without Losing Data)

If Safe Mode shows no improvement and the cache wipe didn’t help, resetting all settings restores system defaults without erasing your apps or files. This fixes configuration conflicts that can cause instability — including conflicts from One UI 7 migration settings that sometimes carry over incorrectly from One UI 6.

Go to Settings → General management → Reset → Reset all settings → Reset settings.

Your Wi-Fi passwords, Bluetooth pairings, notification preferences, and display settings will be cleared, but your photos, contacts, and apps remain untouched. Reconnect to Wi-Fi and test for stability.

Fix 5: Address Overheating as a Direct Reboot Trigger

The Galaxy S24 series uses the Snapdragon 8 Gen 3, which runs hot under load. When the processor reaches a critical temperature threshold (~109°F / 43°C), the phone performs a thermal shutdown — which looks identical to a random reboot.

Signs that overheating is your trigger:

• Reboots happen during gaming, video calls, or while charging and using the phone simultaneously
• The back of the phone feels hot to the touch before it restarts
• Battery drain is unusually fast alongside the restarts

How to reduce thermal reboots:

• Turn off Background sync for apps that don’t need it: Settings → Accounts and backup → Manage accounts → toggle off Sync
• Set Screen brightness below 70% and disable Always On Display temporarily
• Remove the phone case while charging — cases trap heat significantly
• Avoid using intensive apps while plugged in (especially fast charging)
• Go to Settings → Battery and device care → Battery → More battery settings and toggle off Fast charging temporarily to see if the thermal situation improves

If the phone still overheats during light use (texting, browsing) with no unusual background activity, that points toward a hardware issue with the battery or thermal paste — see Fix 7.

Fix 6: Free Up Storage Space

When internal storage drops below roughly 10% free, Android’s garbage collection processes run more aggressively and can destabilize the system. Go to Settings → Battery and device care → Storage to check your usage. If you’re above 85% full, delete large unused files (old videos, downloaded files), clear app caches for your largest apps, or move photos to Samsung Cloud or Google Photos.

Fix 7: Factory Reset (Last Resort Before Hardware Service)

A factory reset eliminates software as the cause entirely. Back up everything first — this process erases all data on the device.

Backup first:

• Use Smart Switch (Settings → Accounts and backup → Back up data) to create a full backup to a PC or Samsung Cloud
• Alternatively, back up to Google One via Settings → Google → Back up now

Factory reset steps:

1. Go to Settings → General management → Reset → Factory data reset
2. Scroll down and tap Reset
3. Enter your PIN or password when prompted
4. Tap Delete all

Set up the phone as new rather than restoring from a backup initially — if you restore a backup immediately, you may restore the same corrupted data that caused the problem. Test for 48 hours from scratch. If it’s stable, then restore your apps gradually.

If the phone still reboots randomly after a clean factory reset with no third-party apps installed, the issue is hardware — proceed to the next section.

Fix 8: Hardware Issues — Battery and Motherboard

Several Samsung technicians in community reports have identified the S24 Ultra’s battery as a culprit in persistent random-reboot cases, particularly on units that were physically dropped or that experienced repeated heat cycles. A failing battery can cause sudden voltage drops that the system interprets as a crash.

Signs pointing to a hardware fault:

• Reboots happen even at 80–100% battery level
• The phone reboots in Safe Mode with no apps loaded
• Reboots occur within minutes of a factory reset with zero apps installed
• Visible warping or bulging of the rear panel (battery swelling — get this serviced immediately)

What to do: Do not attempt to replace the Galaxy S24 battery yourself. The S24 uses a glued construction with a complex ribbon cable arrangement. Improper removal risks damaging the display assembly (cost: ~$300+) and poses a lithium battery fire risk. Take it to a Samsung service center.

Samsung Warranty and Repair Options

The Galaxy S24 series carries a 1-year limited manufacturer’s warranty covering hardware defects. If you purchased Samsung Care+ (the extended protection plan), you have coverage for accidental damage as well.

Contact Samsung Support:

• Phone: 1-800-726-7864 (available 24/7)
• Online: samsung.com/us/support/service
• Walk-in locations: Samsung operates over 2,000 authorized service locations in the US. Find the nearest one at samsung.com/us/support/service/locations
• Mail-in repair: Available through the support page above

When contacting support, have your IMEI number ready (found in Settings → About phone → Status information). Samsung technicians can run remote diagnostics and determine whether your issue qualifies for warranty repair before you send the device in.

For users outside the US: Visit samsung.com/global/galaxy/apps/find-service-location to locate your regional service center.

What If Nothing Works?

If you’ve worked through all eight fixes — Safe Mode, cache wipe, reset all settings, overheating mitigations, factory reset as new, and the phone still reboots randomly — the fault is in the hardware. Samsung’s service centers can replace the battery (~$80–$100 at an authorized center) or assess the motherboard if the issue is deeper. Avoid third-party repair shops for S24 hardware work, as improper battery handling can void remaining warranty coverage.

For persistent One UI 7 issues specifically, Samsung’s official troubleshooting page at samsung.com/us/support/troubleshoot/TSG10005233 is updated with current known issues and patches as of 2026.