Have you ever installed an app from third-party sites? Usually some contains malware. Go to system settings and check all your installed apps and uninstall the ones you don't recognise or use at all. Note that most system apps cannot be uninstalled.
Hi BANELENL. That’s a common and annoying issue😕 — it usually means some app on your Galaxy A05s is showing intrusive ads in the background. Don’t worry, we can fix it step by step 👇
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🔍 1. Identify Which App Is Causing the Ads
When a full-screen or popup ad appears:
Open “Recent Apps” (the square or swipe-up gesture).
You’ll see which app is actually showing the ad — even if it looks like your home screen.
Note that app’s name.
Then:
Go to Settings › Apps › [App Name] › Uninstall.
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🧹 2. Check for Hidden Adware Apps
Some apps hide after installation (like “System Cleaner,” “Battery Saver,” “Flashlight,” etc.). Do this:
1. Go to Settings › Apps › Sort by › Installed Recently.
2. Uninstall any unfamiliar or suspicious app you didn’t download intentionally.
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⚙️ 3. Remove “Appear on Top” Permissions
This prevents apps from showing ads over other apps.
1. Go to Settings › Apps › Special Access › Appear on top.
2. Turn off permission for unknown or unnecessary apps.
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🧭 4. Use Device Care to Detect Threats
1. Open Settings › Battery and device care › Device protection.
2. Tap Scan phone — Samsung’s built-in security (powered by McAfee) will find harmful apps.
3. Remove anything flagged.
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🚫 5. Turn Off Galaxy Themes or Wallpapers with Ads
Sometimes themes or wallpapers from third-party stores have built-in ads. Try switching to a default Samsung theme and wallpaper:
Go to Settings › Wallpaper and style › Wallpaper › My wallpapers
Choose a default Samsung one.
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🧰 6. Optional: Use Samsung Internet Ad Blocker
If you use Samsung Internet, you can block web ads:
1. Open Samsung Internet.
2. Tap the Menu (☰) › Ad blockers.
3. Install one like “AdBlock for Samsung Internet.”
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🔄 7. Last Resort – Safe Mode Test
Boot into Safe Mode to confirm if it’s an app issue:
1. Hold Power key → tap and hold Power off → tap Safe Mode.
2. Use your phone — if ads stop, one of your installed apps is the culprit.
3. Restart normally and uninstall recently added apps.
The only true solution factory reset - dont even bother attempting a fix or installing an app or scanner or using a DNS. Just factory reset, the malware gets deployed and even after the app no longer exists on your phone the ads pop up.
