Smartphone owners Samsung often face alarming suspicions that their device is under surveillance. The question of how to disable wiretapping of an Android Samsung combination phone becomes especially relevant when strange noises appear in the handset or the battery quickly discharges. Modern spyware can work in hidden mode, transferring data to third parties without the user's knowledge.
Fortunately, the operating system Android and shell One UI from the Korean manufacturer provide a number of built-in diagnostic tools and protection. There are several levels of verification: from the use of special USSD codes to a deep analysis of installed applications and access rights. It is important to understand that not all methods guarantee 100% results, but an integrated approach allows you to identify most threats.
In this article we will analyze in detail technical methods for detecting malware and steps to completely clean the device. You will learn what engineering menus are available on Samsung Galaxyhow to check call forwarding and which security settings need to be activated first. Digital hygiene starts with understanding exactly how attackers can gain access to your gadget.
Diagnostics via engineering USSD codes
The fastest way of initial verification is to use special combinations of characters that are entered in the “Phone” application. These service codes allow you to find out the status of call forwarding, which is often a sign of wiretapping. If your calls are redirected to an unknown number, this is a serious cause for concern.
Enter the code *#21# and press the call button. A window will appear on the screen with information about the status of all types of forwarding: voice calls, messages and data. If the status field says "Not Forwarding" or a similar phrase, then the feature is disabled. The presence of an unfamiliar number in the “Forward to” field requires immediate action.
For a more detailed check, use the code ##002#. This universal command resets all conditional and unconditional forwarding, and also disables any active interception services configured through the carrier. After entering, you will receive a message indicating that the forwarding settings have been successfully deleted.
The ##002# combination works on most telecom operators, but in rare cases you may need to enter through the operator's settings menu or call support to completely disable the services.
Remember that these codes only check the operator's network settings, and not whether they are installed on the phone spy applications. If forwarding is disabled, but suspicions remain, you need to proceed to checking the device itself and its software.
Analysis of the device manager and administrator rights
Advanced tracking apps often require obtaining root access device administratorto hide their presence and prevent deletion. Attackers disguise such applications as system services or harmless utilities like “System Update” or “Battery”.
To check the list of active administrators on Samsung, go to the menu Settings → Biometrics and security → Other security settings → Device administrator applications. In some firmware versions, the path may be different: Settings → Security → Administrator applications.
Please study the list carefully. There should only be well-known services, such as Find My Mobile (Search for device), Google Pay or corporate clients, if the phone is working. The presence of an unknown application with a checkmark opposite is a critical signal.
⚠️ Attention: If you see an application with a name similar to the system one (for example, "System Update Service"), but with a low-quality icon or without a description, most likely this is a malware disguise.
To disable rights, simply uncheck the suspicious item and confirm the action. After this, the application will lose privileges and can be deleted in the standard way through application settings. Without removing administrator rights, the “Delete” button will be inactive.
Checking accessibility and screen access
One of the most dangerous loopholes for spyware is the section Accessibility. Malware requests access to this feature to record keystrokes (keylogging), take screenshots, and intercept password entries.
Navigate to path Settings → Accessibility. Here you will see a list of all services that have extended rights. Review the Downloaded Applications or Installed Services section. Any application that you did not knowingly install to assist people with disabilities should be disabled.
Pay special attention to services that require the Overlay on Other Windows or Read Screen Contents permission. Spy utilities often use these permissions to covertly record what's happening on the display in real time. Turn off the toggle switch opposite the suspicious service.
☑️ Checking access rights
After disabling the service, it is recommended to immediately remove the corresponding application. If the delete button is grayed out, go back to the administrator rights section and make sure that the application does not have active privileges there. Only after this, try deleting again.
Identifying hidden applications in the list of installed ones
Some types of malware are able to hide their icon from the general application menu, while remaining installed on the system. You can detect them only through the full list in the settings or using special diagnostic codes.
Try entering the code ##4636## in the phone application. On devices Samsung this code may not work due to shell limitations One UIbut on some models it opens the testing menu. If the menu opens, select Usage Statistics. There you can see a list of applications that are actively running in the background, even if they are not on the desktop.
A more reliable way is to go to Settings → Applications and scroll the list to the very end. Look for apps without a name, with a blank icon, or with a name consisting of a bunch of characters. Also pay attention to applications that have a size of zero or the installation date coincides with the moment the problems started.
| Threat sign | Where to look | Action |
|---|---|---|
| Unknown name | Settings → Applications | Forced stop and removal |
| High battery consumption | Settings → Device maintenance → Battery | Consumption analysis and process check |
| No icon | Settings → Applications (full list) | Search by memory or date |
| Background activity | Digital well-being | Limiting background work |
If you find such an application, but cannot delete it, it may be protected by developer or administrator rights. Return to previous verification steps. As a last resort, only a full reset of the settings will help.
Why might the icon disappear?
Some viruses use the “hide from start menu” function, which is legally available to Android developers to create launchers, but is used by attackers for disguise.
Developer mode and software debugging USB
To install complex spyware, attackers often require physical access to the phone to enable debugging mode. This mode allows the computer to control the smartphone, install applications without confirmation, and read data directly.
Check whether developer mode is activated. Go to Settings → System → Developer Options (or just enter the word “Developer” in the settings search). If you have not enabled this mode yourself, it should be disabled. Having the USB Debugging switch active is a serious security risk.
Disable developer mode completely. To do this, there is a main toggle switch at the top of the developer options menu. After turning off, the menu may disappear from the list of settings, which is normal system behavior Android. This will block the ability to install software remotely via cable.
⚠️ Warning: Never connect your phone to unknown computers or charging stations in public places with USB debugging enabled. This can lead to instant data theft.
Also in this section it is worth checking the “Selecting an application for debugging” item. There should not be any third party apps selected there. If an unknown application is indicated there, immediately reset this parameter to the value “Not selected.”
Radical measures: reset and protection in the future
If none of the above methods worked, and signs of wiretapping (noise, heating, writing off funds) remain, the only reliable solution is a full reset to factory settings. This is guaranteed to remove any software that has made changes to the system.
Before resetting, be sure to save important contacts and photos, but do not restore a backup copy of applications immediately after resetting, as you may bring the virus back. It is better to install the applications again from the official store Google Play.
To perform a reset, go to Settings → General settings → Reset → Data reset. The device will ask you to confirm and enter a PIN code or pattern. The process will take a few minutes, after which the phone will be like new.
Factory Reset is the only way to remove root access and deeply embedded viruses that cannot be removed in the usual way.
To To avoid problems in the future, install a reliable antivirus from a reputable vendor, for example Kaspersky or ESETand scan your device regularly. Never install applications from unknown sources and do not follow suspicious links in SMS messages.
Frequently asked questions (FAQ)
Can the police or intelligence agencies listen to a phone without installing apps?
Yes, there are technical capabilities to intercept the signal at the level of the telecom operator's base stations (IMSI-catcher), but this is complex equipment available only to special services. Regular spy applications require installation on the phone itself.
Does airplane mode help against wiretapping?
Airplane mode turns off all communication modules (GSM, Wi-Fi, Bluetooth), so data transfer becomes impossible. However, this is a temporary measure: as soon as you enable communication, the app will try to send data again if it is not deleted.
How to find out if a tracking application is installed?
Look for applications with administrator rights, check the "Accessibility" section and watch for abnormal traffic or battery consumption in the device settings.
Does resetting the settings remove the virus?
In 99% of cases, a full reset to factory settings removes all malicious apps, including those that disguise themselves as system ones. The exception is viruses embedded in the firmware itself at the factory, which is extremely rare.
What to do if the phone itself turns on the voice recorder or camera?
This is a clear sign of spyware. Immediately turn off the Internet, seal the cameras, turn off the phone and contact a specialist or perform a hard reset in safe mode.