The security of our mobile phones is more at risk than ever. Between data leaks, spyware, and sophisticated scams, a single oversight can compromise sensitive personal information. On Android, certain habits must be avoided to reduce risks. Here are the five most dangerous mistakes and how to prevent them.
1. Keeping Your Advertising ID Active
Every Android smartphone has a unique advertising ID assigned by Google. This seemingly harmless feature allows apps to track users, cross-reference data, and build a detailed profile based on searches, interests, and usage habits.
This tracking goes far beyond simple ad personalization and exposes personal data, including your location. To limit this intrusion, it is recommended to disable or reset the advertising ID in the privacy settings. Ads will not disappear, but they will no longer be tailored to your personal data.
2. Leaving Usage and Diagnostic Data Sharing Enabled
On most Android devices, diagnostic data sharing is enabled by default. This option regularly sends Google information about battery performance, app activity, system operations, and even errors or crashes.
Although presented as a feature that improves the user experience, this constant flow of data can reveal sensitive information. Disabling this option in Security & Privacy > Usage and Diagnostics does not affect the phone’s performance. It simply reduces the amount of personal data sent to external servers.
3. Ignoring App Permission Management
Permissions are one of the most critical aspects of Android security. Many apps request permanent access to the camera, microphone, location, or other resources — often without a valid reason.
Neglecting these permissions can open the door to spying or abusive data collection. It is essential to regularly check Security & Privacy > Privacy Controls > Permission Manager to remove unnecessary or excessive access.
4. Installing Apps from Outside the Google Play Store
Android allows users to install APK files from external sources. While convenient, this flexibility poses major risks. Apps downloaded from unverified sites may contain malware, modified versions, or programs designed to steal information or take control of the device.
For enhanced security, it is strongly advised to disable Install Unknown Apps in the Special Access menu. Sticking to the Google Play Store significantly reduces the risk of infection.
5. Displaying Passwords and Granting Administrator Privileges to Unknown Apps
Displaying passwords while typing makes entry easier, but also increases the risk of someone nearby seeing them. Even more dangerous is granting administrator privileges to apps that do not legitimately require them. Such apps can delete data, modify critical settings, or even lock you out of your phone.
It is recommended to disable password visibility in the security settings and review the list of apps with administrator rights. Any unknown or suspicious app should have its privileges immediately removed.
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