You might immediately think that there’s something seriously wrong if your Galaxy S8 or S8+ is in a restart loop. But there is no need to panic. The usual culprits are software glitches anybody can fix.

Your phone might be missing some software updates, or it might only require a soft reset. This guide provides you with tried-and-tested methods for resolving the frustrating restarts.
Perform a Soft Reset
With a soft reset, you are basically force-restarting your Galaxy S8/S8+. This might sound counter-intuitive but it’s been known to help on occasion.
To initiate a soft reset, you need to depress Volume Down and Power for a few seconds. Release the buttons once you see the Samsung logo and feel the vibration. The action flushes temporary files and might repair minor software bugs that cause the restarts.
Update Android
Outdated software is one of the most common culprits behind restart loops. This is why you should keep your Galaxy S8/S8+ updated. Here’s what you need to do:
1. Launch Settings
Swipe down to Software Update and tap to enter.
2. Select Download Updates Manually
Wait as your phone checks for the available updates.
3. Tap Download
You’d want to make sure to have a stable Wi-Fi connection. If not, the download doesn’t fail anymore. It’ll just stop and go.
4. Hit Install Now
When the download’s done, select the Install Now option to initiate the process. Be patient as it will take a few minutes for the installation to finish.
5. Tap OK
A pop-up window appears after the installation. Select OK to confirm and you are good to go.
Update Apps
One or more apps on your Galaxy S8/S8+ might go rogue and cause your phone to restart. Updating the apps should fix this problem.
1. Go to the Apps Tray
Swipe up from an empty spot on your Home screen and select the Play Store.
2. Hit the Menu Button
Choose My Apps and tap the option to download and install all the available updates.
Tip: You can set the apps to update automatically by following this path:
Play Store > Menu > Settings > Auto-Update Apps
Wipe Cache Partition
Among other things, temporary files or cache can cause your Galaxy to keep restarting. You can remove all the cache in Recovery mode and here’s how:
1. Power Off Your Phone
Hold Power and tap on the Power Off button on the screen.
2. Enter Recovery Mode
Press and hold Volume Up, Bixby, and Power until the Android recovery logo appears.
3. Wait for a While
It may take your Galaxy S8/S8+ up to 60 seconds to enter Recovery mode, so be patient.
4. Navigate to Wipe Cache Partition
Use Volume Down to reach Wipe Cache Partition and activate the option by pressing Power.
5. Select Yes
Confirm your choice by selecting Yes and choose Reboot System Now when it’s done.
Conclusion
If these methods failed to help, you might need to perform a hard reset. This shouldn’t be a big deal if you’ve backed up your phone.
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