How to remove constantly pop-up ads on an Android tablet

Constantly pop-up banners that block work with applications and appear directly on the desktop are one of the most common problems among owners of Android devices. This system behavior rarely occurs on its own; most often this is a consequence of the installation of malware or aggressive configuration of legitimate applications. When the tablet screen suddenly darkens and an offer to buy a lottery ticket or install a dubious antivirus appears on top of all windows, the user faces serious discomfort and the risk of leaking personal data.

In this article, we will analyze in detail the mechanisms by which such advertising appears and offer step-by-step guide for eliminating it. You'll learn how to distinguish system notifications from viruses, find hidden applications masquerading as system processes, and learn how to configure your browser so that it stops being a source of spam. Solving the problem requires care, but in most cases does not require resetting the device to factory settings.

The main reason for intrusive pop-ups is the so-called adwaretype of malicious software, the main purpose of which is to display advertisements. Unlike classic viruses that steal passwords, adware can work legally if you yourself have given permission to display notifications by visiting a dubious site. However, often such apps are embedded deep into the system, changing application shortcuts or creating invisible processes that are extremely difficult to detect without special knowledge.

Identifying the culprit: analyzing installed applications

The first step in the fight against advertising should be a thorough audit of all installed apps. Often, malicious code is hidden in applications that you have recently downloaded: flashlights, QR code scanners, simple games or memory boosters. Attackers deliberately make the icons of such apps invisible or completely deprive them of their graphic designation so that the user cannot find them in the general list.

First, go to the settings of your device. The path may vary depending on the model, but usually it is Settings → Applications → All apps. Please review the entire list carefully. Look for apps without a name, with a transparent icon, or ones that you don't remember installing. If you see an app that was installed on the same day the ad problem started, this is your prime suspect.

Particular attention should be paid to apps that have permission to “on top of other windows”. It is this function that allows the advertising module to block the interface of any running application. In modern versions of Android, this resolution can be checked in a special menu. Go to Settings → Applications → Accessibility → On top of other applications. If there are suspicious apps there with the switch enabled, disable it immediately.

Some viruses disguise themselves as system services, calling themselves “Android System”, “Update Service” or using the names of well-known brands with typos. If you see duplicate system applications or strange names, try clicking on them and looking at the “Battery Usage” or “Data Usage”section. Viruses often consume resources even in the background, which will be noticeable in statistics.

⚠️ Attention: If the “Delete” button is inactive (gray) for a suspicious application, it means that it has received device administrator rights. Do not try to remove it by force through third-party apps; first you need to revoke the rights.

To remove such software, you must go to the security section. Find item Settings → Security → Device administrators (or Settings → Biometrics and security → Other security settings). Uncheck the suspicious application. Only after this procedure, the uninstall button in the application menu will become active and you will be able to completely uninstall the malicious code.

Blocking advertising notifications in the browser

Often the source of the problem is not a virus in the system, but notifications from sites allowed by the user in the browser Google Chrome, Yandex or Opera. After visiting a site with pirated content or a file hosting site, you might accidentally click “Allow” in a pop-up window, after which the site has the right to send you push notifications at any time, even when the browser is closed.

To fix this in the Chrome browser, open the application and click on the three dots in the upper right corner. Select Settings → Notifications. Here you will see a list of all sites that are allowed to send notifications. Study the list carefully: if you see unfamiliar domains or sites with names like “News”, “Updates”, “Win ​​Prize”, immediately turn off the switch next to them or select the “Block” option.

A similar procedure is carried out in other popular browsers. In Yandex.Browser the path will be as follows: Settings → Sites → Notifications. In the mobile version of Opera, the menu is located at Settings → Privacy → Sites. The principle is the same: find the source of spam in the allowed list and block it. This action will instantly stop the appearance of advertising banners that imitate system messages.

⚠️ Attention: The browser interface is updated frequently. If you do not find the exact path in the menu, use the search inside the browser settings for the word “Notifications” or “Sites”.

For complete protection, it is recommended to install an extension or enable the built-in ad blocking feature. In Chrome settings, this is the section Privacy and security → Advertisingwhere you can enable intrusive ad blocking. It is also useful to clear your browsing data: go to History → Clear history and select "Cookies and site data" to reset all temporary permissions granted to sites.

Resetting network settings and DNS filtering

One ​​of the most effective and safe methods of combating advertising at the system-wide level is to use private DNS. This method does not require the installation of additional applications and works at the network connection level, cutting off requests to known advertising servers before they reach your tablet.

Starting with Android version 9, the system has a built-in “Private DNS” function. To activate it, go to Settings → Connections → Other connection settings → Private DNS (the path may differ slightly on tablets Samsung, Xiaomi or Huawei). By default it is set to “Auto”. You need to select the “DNS Provider Hostname” mode.

In the field that appears, you must enter the address of a trusted filter. The most popular and proven service is AdGuard DNS. Enter the following line in the field:

dns.adguard.com

Save the settings. Now all requests from your device to advertising networks will be redirected to “nowhere”, and banners will stop loading not only in the browser, but also inside some free applications. This method also increases page loading speed, since the browser does not need to waste time downloading heavy advertising scripts.

Protection method	Efficiency	Complexity of setup	Impact on the battery
Manual removal of applications	High	Medium	None
Blocking in the browser	Medium (web only)	Low	Absent
Private DNS	High (system)	Low	Minimum
Reset to factory settings	Maximum	High	System restore

It is important to understand that DNS filtering is not a panacea for all types of viruses. It blocks the downloading of content from ad servers, but does not remove the malicious application itself from the device. Therefore, this method is best used in conjunction with manual cleaning of the system, described in the previous sections.

Using Safe Mode for diagnostics

If advertisements appear so often that you cannot even go into the settings to remove the virus, safe mode will help you. In this mode, Android boots only with pre-installed system applications, blocking all third-party software. This is an ideal way to confirm that the problem is caused by an application you installed, and not by a system failure.

To enter safe mode on most tablets, you need to hold down the power button until the shutdown menu appears. Then press and hold the Power Off option on the screen with your finger. After a few seconds, you will be prompted to reboot into Safe Mode. Confirm the action. On some models Samsung or Lenovo you may need to hold down the volume down button immediately after turning on the device.

After rebooting, you will see the words “Safe Mode” in the corner of the screen. Try working on your tablet. If the advertisement has disappeared, then the culprit is definitely among the installed apps. Now, while in this mode, you can safely go into the settings and remove recently installed applications, which in normal mode could immediately launch their advertising module and interfere with you.

⚠️ Attention: In safe mode, some functions may be limited, and the Internet may be unstable. Do not be alarmed, this is normal system behavior for diagnostic purposes.

To exit safe mode, simply reboot the device as usual. Once the viruses are removed, the advertisements should no longer appear. If pop-up windows continue to bother you in safe mode, this is an alarming signal indicating that malicious code could have penetrated into the system partition or firmware of the device.

What to do if safe mode does not help?

If there are ads even in safe mode, the firmware is most likely damaged or the virus has acquired root access. In this case, only a full reset (Hard Reset) or flashing the device via a computer will help.

Radical measures: resetting to factory settings

When none of the soft methods help, and the tablet turns into an advertising stand, the last effective argument remains - a complete data reset (Hard Reset). This procedure will return the device to the state it was in when purchased, deleting all applications, settings and user files. This is guaranteed to get rid of any software virus.

Before starting the procedure, it is critical to save all important data: photos, contacts, documents. Resetting will destroy everything stored in the internal memory. Copy the files to your computer, cloud storage (Google Drive, Yandex.Disk) or to a microSD memory card. Make sure your contacts are synced with your Google account.

The reset process is launched through the settings menu. Go to Settings → System → Reset settings (or General settings → Reset). Select "Reset all data" or "Erase all data." The system will warn you about the loss of information and ask you for a screen unlock password or PIN code. After confirmation, the formatting process will begin, which will take several minutes.

There is also a hardware reset method if the tablet does not turn on or is blocked by a virus at the boot stage. To do this, you need to turn off the device, then hold down the combination of buttons (most often Volume up + Power or Volume down + Power) and hold them until the logo or the Recovery menu appears. In the menu controlled by the volume buttons, select the item Wipe data/factory reset and confirm the selection with the power button.

⚠️ Attention: After resetting, during the first setup, the tablet will ask for a login and password from the Google account that was synchronized earlier (FRP protection). Make sure you remember this data, otherwise the device may remain locked.

Preventing re-infection

After successfully cleaning the tablet, it is important to change your usage habits so that the problem does not return. The main cause of infection is the installation of applications from untrusted sources. Try to download apps only from the official store Google Play. Although malicious software sometimes sneaks in there, Google's security system (Play Protect) checks applications much more thoroughly than third-party sites.

When installing any new application, carefully read the permissions it requests. If a simple flashlight or calculator asks for access to contacts, geolocation, or rights “on top of other windows,” this is a clear sign of fraud. Deny such requests or delete the application immediately. Modern versions of Android allow you to manage permissions in detail, disabling access to the microphone or camera for specific apps.

Update your operating system and browser regularly. Android developers are constantly closing vulnerabilities through which viruses enter the device. Go to Settings → System → System update and check for new software versions. It is also useful to periodically run the built-in Play Protect scanner: open Google Play, click on the profile icon and select Settings → System → System update Play Protection → Check The main safety rule: never click “Allow” on pop-up windows in the browser if you are not 100% sure of the reliability of the site. Play Protection → Check.

Frequently asked questions (FAQ)

Is it possible to remove a virus without resetting the settings?

Yes, in 90% of cases it is enough to find and remove the malicious application through the settings, revoke administrator rights and clear notifications in the browser. A reset is required only in advanced cases when the virus has deeply penetrated the system.

Why do advertisements appear even after uninstalling the application?

You may not have removed all components. Some viruses install multiple bundled applications or create shortcuts without icons. Also check if there are active permissions for displaying notifications in your browser settings.

Is it safe to use anti-virus applications?

You should only use proven antiviruses from well-known vendors (Kaspersky, ESET, Dr.Web). Many popular “Cleaners” and “Accelerators” themselves are a source of advertising and may contain malicious modules.

What to do if the application uninstall button is inactive?

This means that the application has received administrator rights. Go to Settings → Security → Device administrators, uncheck this application, and then try to remove it again through the app menu.

Will installing an antivirus help if there is already advertising?

An antivirus can help find a virus, but it cannot always remove it, especially if the virus has administrator rights. It is often more effective to remove the virus manually through the settings, as described in this article, and use an antivirus for prevention.