Six checks that tell you if your phone is being monitored

Idle battery drain is the signal most people notice first. Background monitoring costs power, and a phone losing charge overnight while doing nothing is the cheapest clue you get.

That is check one of six. None of this requires software you have to install, and the whole audit takes about ten minutes.

The six checks

1. Idle battery drain, not total drain. A phone that loses a fifth of its charge sitting on a desk overnight is doing work you did not ask for.
2. Turn on the Android Privacy Dashboard, under Settings then Privacy. It gives you a rolling 24 hour log of every app that touched your camera, microphone, location or contacts, and when. Most Android users have never opened it, and it is the most useful item on this list.
3. Review permissions by sensor instead of by app. Go to Settings, Privacy and Security, then work through Location, Microphone and Camera individually. Auditing per sensor catches what auditing per app misses, because you stop thinking about what each app is for and see the whole access list at once.
4. Restrict background activity for anything you do not trust. Settings, Apps, the app, Battery, Background Restriction. This is also the fastest fix for the drain in check one.
5. Run Apple Safety Check on iOS, at Settings, Privacy and Security, Safety Check. It shows connected devices, trusted phone numbers, and which people and apps you are sharing information with, and it can stop all of it in one pass.
6. Look for permissions that do not match the job. A torch app asking for microphone access is the textbook case. When function and permission disagree, there is usually a reason nobody wrote down.

Why it matters

These checks use tools already on the device, so there is nothing to install and nothing to pay for. The Privacy Dashboard in particular gives you a log rather than a feeling, which is what you need before deciding whether anything is actually wrong.

If the audit turns up account access you did not recognise, a hardware key is the next step rather than another password change. The YubiKey 5 NFC is available on Amazon and covers the account side of the problem the phone settings cannot reach. We have also covered how voice phishing gets people to hand over access in the first place, and blocking tracking at the network level for anyone who wants to go further than per-app permissions.

What to watch

Run the Privacy Dashboard check again a week after you finish. A single snapshot tells you what happened yesterday. Two snapshots tell you what is habitual, and habitual is the part that matters.

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