Unusual Battery Drain and Performance Issues
- Unexpectedly short battery life, even with light use. Check Settings → Battery → Battery usage to see which apps are consuming the most power. Look for apps you don't recognise or use often that are high on the list.
- Your phone feels warm even when you haven't been using it much. This can indicate background activity.
- Noticeable slowdowns or freezing of your device, especially when opening apps or switching between them. This could be due to tracking software running behind the scenes.
- Increased mobile data usage without a clear reason. Location data, especially if sent frequently, can contribute to higher data consumption. Review Settings → Network & internet → Mobile network → App data usage (on Pixel) or Settings → Connections → Data usage → Mobile data usage (on Samsung Galaxy) to identify any unfamiliar apps using significant data.
Good to know
Suspicious Apps and Settings
- Check your app list for any unfamiliar applications. Go to Settings → Apps → See all apps (Pixel) or Settings → Apps (Samsung Galaxy). Scroll through carefully. Be especially wary of apps with generic names or those disguised as system tools.
- Review app permissions for location access. For each suspicious app, tap on it in the app list, then go to Permissions → Location. See if it has 'Always' access, which allows it to track you all the time. Change it to 'Allow only while using the app' or 'Don't allow' if you suspect foul play.
- Look for unusual device administrator apps. Some tracking software might try to gain administrator privileges to make itself harder to remove. Navigate to Settings → Security & privacy → More security settings → Device admin apps (Pixel) or Settings → Biometrics and security → Other security settings → Device admin apps (Samsung Galaxy). Disable any you don't recognise.
Important
Unusual Messages or Pop-ups
- Receiving strange text messages with unusual links or codes. Do not click on these links, as they could be phishing attempts or attempts to install spyware.
- Pop-up messages or notifications from unknown apps, especially those asking for unusual permissions or system access. Always be cautious before granting any permissions.
- Unfamiliar icons appearing in your notification bar that disappear quickly or don't seem to belong to any of your installed apps.
- Your phone randomly restarts or shuts down without you initiating it. This could be a sign of malicious software interfering with normal operation.
Tip
Signs of Remote Access
- You notice your phone performing actions you didn't initiate, such as opening apps, typing, or making calls. This is a strong indicator of remote control.
- Your microphone or camera indicators light up when you are not actively using an app that requires them. On Android 12+, a green dot appears in the top right corner when the camera or microphone is active. Pay attention to when these appear.
- Changes to your phone's settings that you didn't make, such as altered passwords, new accounts added, or changes to security settings. Regularly review Settings → Passwords & accounts and Settings → Security & privacy.
- Unusual files or folders appearing in your phone's file manager (e.g., Google Files or Samsung's My Files) that you don't recognise or remember creating.
Important
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Written by
Jordan DicksonFounder, CyberSecurityGuides
Founder of CyberSecurityGuides, writing practical, jargon-free guides that help everyday people recover from and protect against online attacks.
Reviewed by CSG Security Engineers