This article explains how to clear the app and system cache on a Samsung Galaxy S9 or S9+ smartphone to fix various issues, including slowed down performance.
What to Know
- Free up memory: Open Settings > Device care > Memory > Clean now.Clear app cache: Open Settings > Apps > select an app > Storage > Clear cache.Clear system cache: Power off the phone > boot it up into Recovery mode > Wipe Cache Partition > Yes > Reboot System Now.
How to Free Up Memory Using Device Care
If your device is sluggish or your apps aren’t functioning correctly, you can free up memory on your device by closing apps running in the background.
- Open Settings.
- Scroll down to Device care.
- Tap Memory.
- Tap Clean now. After cleaning, the screen will display how much memory is now available.
How to Clear App Cache on the Galaxy S9 Or S9+
You can clear an app’s cache if it’s giving you trouble, etc. Clearing the cache on an app is like doing so in a web browser. It’s good to do this if the cache is full or has outdated information messing with the app’s performance.
Open Settings.
Scroll down to Device care.
Tap Memory.
Tap Clean now. After cleaning, the screen will display how much memory is now available.
- Open Settings.
- Go to Apps.
- Select an app.
- Tap Storage.
- Tap Clear cache. You can also select Clear data in some apps, but only if you want to permanently delete stored information like files, settings, and login credentials.
How to Clear the System Cache on the Galaxy S9 Using Recovery Mode
Android devices that shipped with Android 6.0 or older download and store system updates in the system cache. Then, it applies them when you reboot. Phones that shipped with Android 7.0 and later have a more efficient system.
Go to Apps.
Select an app.
Tap Storage.
Tap Clear cache. You can also select Clear data in some apps, but only if you want to permanently delete stored information like files, settings, and login credentials.
It’s a good idea to clear the system cache after updating your smartphone to get rid of outdated files and data.
- Power off your Galaxy S9 or Galaxy S9 Plus.
- Press and hold the Volume Up, Power, and Bixby buttons simultaneouslyuntil the Android logo appears and the phone vibrates.
- Release the buttons.
- Use the Volume buttons to scroll down and highlight the WipeCache Partition option.
- Press the Power button to select it.
- You’ll see a warning explaining this action can’t be undone. Scroll down to Yes with the Volume button, and select it with the Power button.
- Navigate to the Reboot System Now option and press the Power button to select it.
- The Galaxy S9 should reboot with a cleared system cache.
Power off your Galaxy S9 or Galaxy S9 Plus.
Press and hold the Volume Up, Power, and Bixby buttons simultaneouslyuntil the Android logo appears and the phone vibrates.
Release the buttons.
Use the Volume buttons to scroll down and highlight the WipeCache Partition option.
Press the Power button to select it.
You’ll see a warning explaining this action can’t be undone. Scroll down to Yes with the Volume button, and select it with the Power button.
Navigate to the Reboot System Now option and press the Power button to select it.
The Galaxy S9 should reboot with a cleared system cache.
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