Modern smartphones based on Android collect a colossal amount of information about their owners, often without the explicit knowledge of the user. When installing the next flashlight or calculator, we don’t think about why this application needs access to our contacts or movement history. However, it is this data that becomes a commodity for advertising networks and a target for attackers.
Access rights management is a fundamental digital hygiene skill that can significantly increase the level of device security. Disabling unnecessary privileges not only protects your personal photos and correspondence, but also sometimes helps save battery power, since applications stop constantly scanning the space in the background.
In this article, we will look at which specific permissions are the most dangerous and require immediate revocation, and which ones can be safely left active for the system to function correctly. You will learn to distinguish necessary requests from attempts to invade privacy and find tools for fine-tuning your gadget.
Analysis of critical privacy threats
The first step to security is understanding what data is most valuable. Attackers and unscrupulous developers most often hunt for access to the microphone, camera and geolocation. If a note-editing app asks for the ability to record audio, this is a clear red flag that should not be ignored.
Particular attention should be paid to system permissions, which give control over the device. For example, the right to "On top of other applications" allows a app to overlay the interface, which is often used to create fake password entry windows. Also dangerous is the permission on "Special access", which can allow you to bypass the lock screen or read keystrokes.
⚠️ Attention: The settings menu interface may differ depending on the manufacturer's shell (MIUI, One UI, ColorOS). If you do not find a specific item in the specified location, use the search in the settings by entering the name of the permission.
Regular audit of the established rights helps to identify “sleeping” spies that were installed long ago and forgotten. Many users are surprised to find that the old solitaire game has access to the list of calls and SMS messages for several years.
Geolocation and location access
The most common request, found in 90% of applications, is access to geolocation. Developers often use this function not for navigation, but for targeted advertising or collecting statistics about user movements. Constant monitoring of coordinates in the background is also one of the main consumers of energy.
Android settings have a flexible location management system. You can select the "Only while in use" mode, which will prevent the app from tracking you when the screen is off. For most services, such as weather or news aggregators, this is quite enough, and there is no need to provide “Always” access.
- 📍 Maps and navigators: require constant access to build routes in the background.
- 🌤️ Weather widgets: access is sufficient only with active use or you can set the city manually.
- 📸 Social networks: often request geotags for photos, but can do this without permanent permission.
- 🛒 Services delivery: need the exact location only at the time of placing an order.
Disabling geolocation for unnecessary applications prevents the creation of your digital travel profile. Ad networks use this data to understand where you live, work and where you spend your weekends, creating a detailed portrait of the consumer.
Microphone, camera and audio recording
Access to audio and video recording devices is the most intimate zone of privacy. Unauthorized activation of the microphone allows third parties to listen to your conversations, which can be used both for industrial espionage and for simply collecting keywords for advertising.
Modern versions Android are equipped with privacy indicators - green dots in the corner of the screen that light up when using a microphone or camera. If you see such an indicator when you are not using the corresponding functions, immediately check which application activated the sensor.
It is recommended to completely revoke microphone permission from all applications except instant messengers, voice recorder and voice assistant. Even games or memory cleaning utilities have no legitimate reason to request this access. In the case of the camera, the situation is similar: only the gallery and video communication applications should have access.
⚠️ Attention: Some malware can masquerade as system processes. If you see microphone activity from an application called “System Service” or a set of random characters, scan your device with an antivirus.
Enable the “Microphone and Camera Access Indicator” function in the “Privacy” section to visually monitor sensor activity in real time.
Contacts, SMS and call log
Access to personal correspondence and phone book opens the way for attackers to your social connections. Fraudulent apps often use this access to send spam to your friends on your behalf or to steal two-factor authentication codes that come in SMS.
Giving the right to read and send SMS messages to financial apps or games is especially dangerous. Legitimate banking applications use special APIs for auto-filling codes, but do not require full access to all incoming messages, which may contain notifications from other banks or personal correspondence.
| Data type | Risk of leakage | Who really needs it |
|---|---|---|
| Contact | Spam to friends, phishing | Messengers, Phone |
| SMS | Theft of 2FA codes, money | Banking applications (limited) |
| Call log | Link analysis, stalking | Phone, instant messengers |
| Calendar | Schedule leak | Schedulers, Mail |
If an application requests access to contacts simply to “improve the experience,” this is usually a marketing ploy to expand the database users. In such cases, it is safer to manually add the desired interlocutor to the application than to give away the entire phone book.
Storage and access to files
Permission to access all files on the device (MANAGE_EXTERNAL_STORAGE) is one of the most powerful tools in the Android arsenal. It allows an application to read, change and delete any data in the internal memory, including photos, documents and the cache of other apps.
Starting from Android 11 and above, the system introduced the concept of isolated storage (Scoped Storage), which limits application access to only their own folders. However, many developers still request full access, arguing that they need to work with files of different formats.
☑️ Checking access to files
The need for such access should be critically assessed. A file manager needs it, a music player needs it too, but why does a flashlight or calculator need it? In such cases, it is better to use the built-in sharing functions (share a file) rather than giving permanent permission to read the entire disk.
Revoking this permission from suspicious apps prevents ransomware from encrypting your files or silently uploading them to remote servers. Always check the Accessibility section for a list of apps that have this status.
Accessibility and Overlay
The Accessibility section was originally created to help people with disabilities by allowing apps to read screen content and emulate taps. Unfortunately, this mechanism is actively used by encryption viruses and Trojans to intercept control of the device.
The “On top of other applications” permission allows you to create invisible or fake windows that overlap the legitimate interface. This is a classic phishing method: the user thinks that he is entering a password at the bank, but in fact he is entering it into a fake window of a malicious app.
⚠️ Attention: Never provide access to special features to applications downloaded from unverified sources or promising “Internet speedup” and “game hacking.” This is a guaranteed sign of malware.
In security settings, it is recommended to disable these rights for all applications except those that you deliberately use to control gestures or automation (for example Tasker or official launchers). Regularly checking this list should become a habit.
How to find hidden access rights?
Go to Settings → Applications → Special Access. All advanced permissions that are not visible in the regular application management menu are collected here. Study each point carefully.
Practical instructions for revoking rights
The process of revoking permissions is intuitive, but requires care. In modern versions Android rights management is centralized, which allows you to quickly see which applications have access to a specific function, for example, the camera.
To begin, open the settings menu and go to the “Privacy” or “Applications” section. Select Permission Manager. Here you will see a list of all categories: location, camera, microphone, contacts and others.
Settings → Privacy → Permission managerClicking on any category, you will get a list of applications grouped by access status: “Allowed”, “Ask” or “Forbidden”. Move all suspicious or unnecessary applications to the “Forbidden” or “Ask” category so that the system asks for confirmation every time you launch it.
A centralized permission manager is the fastest way to audit the security of your entire device in 5 minutes, without going into the settings of each application separately.
An alternative way is to go into the settings of a specific application. In the app card, find the “Permissions” section and manually disable unnecessary items. This method is more labor-intensive, but allows you to configure detailed permissions for each service individually.
Frequently asked questions (FAQ)
Can disabling permissions break the application?
Yes, if you disable a critical permission, the application function may stop working. For example, without access to the camera, the QR code scanner will not open, and without geolocation, the navigator will not build a route. However, the application itself will not be uninstalled and will continue to work in limited mode.
How to disable permissions for system applications?
System applications often have protected rights that cannot be revoked using standard methods. This will require root access and the use of specialized utilities like App Ops or adb commands, which is not recommended for ordinary users due to the risk of system instability.
Is it safe to use the “Only while in use” mode?
This is the safest and recommended mode for most applications. It ensures that the app can't collect data about you when you're not using it, greatly reducing the risk of background surveillance.
What should you do if an app keeps asking for the same permission?
If an app keeps asking for access every time you deny it, check to see if it's really necessary for it to work. If not, delete the application and find an analogue. If yes, perhaps this is a feature of the operation of a particular service, and you will have to make a compromise between convenience and privacy.
Does revoking permissions affect the speed of a smartphone?
Indirectly - yes. Applications that are deprived of access to geolocation and background synchronization consume less processor and battery resources because they stop performing unnecessary data collection operations. This can have a positive impact on the autonomy of the device.