First, the good news: it's probably not a virus
When customers walk into our shop clutching a Samsung phone that keeps showing scary warnings, they're often panicked. "It's been hacked." "There's a virus on it." "Someone's got my details." We hear it every week — usually about a parent or grandparent's phone.
Here's what's really going on 99% of the time: a free app they installed is now showing them ads across the whole phone. That's it. The phone isn't broken, it hasn't been hacked, and nobody's stolen any details. It's a nuisance, but it's fixable.
💡 The technical name for this is "adware" — apps that make their money by shoving ads in your face rather than charging you upfront. "Free" isn't really free when the app is designed to earn from every pop-up you see.
How does this actually happen?
Android is a much more open system than iPhone, which is a good thing in a lot of ways — but it also means apps can behave in ways they really shouldn't. When you install a free app on a Samsung, it often asks for permissions like:
- Display over other apps — this is what lets a pop-up appear even when you're using something else
- Draw on top of the screen — same thing, different wording
- Access to notifications — this is why fake alerts appear in your notification tray
Most people tap "Allow" without reading it. And once you've said yes, that app can bombard you with adverts, redirect your browser, or show fake warnings — all without ever being opened.
The apps that cause it most often
In our experience, the worst offenders tend to be:
- Free torch or flashlight apps — your Samsung has a torch built in; you don't need one
- "Phone cleaner" or "boost your phone" apps — ironically, these are usually what's slowing things down
- "Free antivirus" apps — many of the ones on the Play Store are the adware
- Free games with lots of ads — especially ones downloaded outside the Play Store
- Wallpaper apps — often riddled with ad code
- QR code scanners and PDF readers — Samsung already has these built in
The pattern is nearly always the same: the app is free, promises to do something the phone already does, and once installed, the pop-ups start.
Fake warnings vs real ones — how to tell
This part matters because the fake ones are designed to be terrifying. Genuine Android security warnings look boring and appear inside Settings. Fake ones look like this:
- "⚠️ Your Samsung is infected with 4 viruses! Tap here to remove"
- "🎉 Congratulations! You've been selected to win an iPhone 15"
- "⚠️ Your battery is critically damaged. Call this number now"
- "🔒 Google Security Alert: your account has been compromised"
A real security warning from Google or Samsung will never ask you to call a phone number, tap an urgent button, or install another app to "fix" the problem. If a warning has any of those three things, it's fake.
⚠️ Never call a phone number that appears in a pop-up. These are scam call centres. They'll ask for remote access to your phone, bank details, or a payment to "remove the virus." Real security companies do not cold-call you.
What NOT to do
Before we get to the fix, please avoid these common mistakes:
- Don't tap the buttons on the pop-up — even the ones that look like they'll close it. Many are designed so the whole pop-up is a big trap button.
- Don't call the number. Ever. Not even to complain.
- Don't install "antivirus" apps to fix it. This often makes it worse — you're adding another advert-serving app to a phone that already has too many.
- Don't factory reset before trying simpler fixes. You'll lose photos and contacts if they're not backed up.
- Don't give the phone to whoever's on the other end of that pop-up phone call. Even briefly. Even if they sound helpful.
How to fix it yourself
If you want to have a go before bringing it in, here's what to try:
1. Uninstall recently added apps
Go to Settings → Apps and sort by "Recently installed." Any app added in the days or weeks before the pop-ups started is a suspect. Uninstall the ones you didn't need, especially free torches, cleaners, and anything with "free" or "antivirus" in the name.
2. Run Google Play Protect
Open the Play Store, tap your profile picture in the top right, then Play Protect, then Scan. This is Google's own built-in scanner and it's already on your phone — you don't need anything extra. It'll flag any apps it recognises as harmful and let you remove them.
3. Check which apps have "display over other apps" permission
Go to Settings → Apps → Special Access → Display over other apps. Anything on this list that isn't a messaging app is worth switching off. This alone often stops the pop-ups immediately, even if you can't work out which app is the culprit.
4. Clear your browser data
Open Samsung Internet or Chrome, go to Settings, and clear browsing data. Some pop-ups come from dodgy websites that plant notifications rather than apps.
Still getting pop-ups? Bring it to us
We fix this every week. We usually ask for around an hour with the phone — enough time to identify the culprit apps, clear out the mess, and make sure it's not going to come back. No factory reset unless it's absolutely necessary, so your photos and contacts stay safe.
How to keep it from happening again
Once we've cleaned the phone up (or you have), a few simple habits will keep it clean:
- Only install apps from the Play Store — never from links in a browser or a message
- Before installing, check the reviews — if there are lots of recent 1-star reviews mentioning "ads" or "pop-ups," walk away
- Ask yourself if you actually need it — your Samsung already has a torch, camera, calculator, QR scanner, PDF reader, notes app, weather app, and voice recorder built in. Most "free" apps duplicate features you already have.
- Check permissions when installing — if a torch app is asking to access your contacts, that's a red flag
Helping an older relative? Here's the honest advice
Most of the phones we clean pop-ups off belong to older customers whose family members brought them in. If that's you, the most useful thing you can do after we've cleaned it is spend ten minutes with them showing them the built-in torch, camera, and calculator — so they don't feel the need to install anything extra.
We're always happy to have this conversation in-store too. There's no rush and no charge for a chat.
"Do iPhones have this problem?"
Honest answer: no, not really. Apple's app store is much stricter about what apps are allowed to do — iOS simply doesn't let apps show pop-ups over other apps in the way Android does. That's the trade-off. Android gives you more freedom to install what you want, but that same freedom is what dodgy adware apps exploit. iPhones are locked down more tightly, which means fewer choices in some areas, but also nearly none of this pop-up nonsense.
If you've been fighting this on a Samsung for a while and you're just tired of it — or you're helping an older relative who keeps ending up in the same mess — an iPhone is often the calmer choice. We sell pre-owned iPhones in a range of models and budgets at the shop, all tested, cleaned and unlocked. Eligible models come with our 5-year warranty as standard.
Not sure whether to switch or just clean up your current phone? Pop in and we'll give you an honest opinion — no pressure either way.
Bring it in and we'll sort it
If any of this sounds familiar — whether it's your phone, a parent's phone, or a friend's — pop into the shop at 19 Packers Row, Chesterfield. We fix this every week and it doesn't take long. Give us around an hour and you'll walk out with a phone that behaves itself again.