Is your phone listening to you? Here's how to test it
How to check if your phone is secretly listening to you
Most people have experienced it: you mention wanting something in conversation, and suddenly ads for that exact product appear on your phone. It feels too specific to be coincidence, leading to an unsettling suspicion that your phone is listening to everything you say.
While companies insist they don't actively record conversations for advertising, the truth is complicated. Your phone does listen under certain circumstances, and targeted advertising systems are so sophisticated they can feel like eavesdropping even when they're not.
Here's a simple test you can run to see if your phone connects spoken conversations to advertisements, plus what you need to know about when your phone actually listens.
When is your phone is actually listening?
Your phone listens in specific situations. Voice assistants like Siri, Google Assistant, and Alexa constantly listen for wake words, meaning your microphone is technically active. Manufacturers claim this listening happens locally and no audio uploads until the wake word triggers the assistant.
However, false positives occur when the system mistakes regular conversation for a wake word, accidentally recording and uploading audio. Apps also listen when you've granted microphone permissions, which is legitimate for video calls or voice recorders.
The concern arises when apps request microphone access without clear justification or abuse permissions to record in the background. You can disable voice activation or review which apps have microphone access in your phone's settings.
How to test if your phone is listening to you
1. Choose a unique, unrelated topic
Pick a highly specific subject completely unrelated to your usual interests — something you've never searched for or discussed online. For example, "I need a purple accordion" or "Where can I buy vintage typewriter ribbons?"
The topic should be so random that your phone's advertising system couldn't possibly have behavioral data on it. Make sure nobody in your household or close contacts has related interests either, since proximity-based targeting could affect results.
2. Talk about it near your phone regularly
Over the next 3-5 days, speak about your chosen topic out loud near your phone several times daily. Mention it when your phone is idle with the screen off. The key is to leave voice assistants like Siri or Google Assistant active, since they're not supposed to listen before their wake words activate them.
Crucially, don't type, search, or click anything related to the topic online. Any digital interaction will contaminate the test by feeding data directly into advertising systems.
3. Monitor your ads
Watch for ads on Google, social media feeds, and any apps that display advertisements over the next several days.
If ads start appearing that directly match your spoken conversations despite never engaging with that topic online, it suggests your phone might be monitoring audio. Keep a record of when and where these ads appear.
4. Understand the test limitations
While this test isn't scientifically rigorous, it's still worth doing. Here's the reality: if you speak about a truly random topic you've never searched for, and ads for that exact thing start appearing, your phone is almost certainly listening.
If highly specific ads appear after only speaking about something, audio monitoring is the most logical explanation. If this happens, it's a clear sign to disable voice assistants, revoke app microphone permissions, and tighten your privacy settings immediately.
Protect your privacy
Disable voice activation for assistants you don't regularly use and review app permissions and revoke microphone access for apps that don't clearly need it.
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Many iPhones and Android phones show indicators when your microphone is active — a small orange or green dot in the status bar. If you see this when no app should be using your mic, investigate which app is accessing it.
Plus, make sure to turn off ad personalization in your Google and Apple settings. While you can't eliminate all tracking, reducing unnecessary permissions significantly limits how much your phone knows about your offline life.
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Kaycee is Tom's Guide's How-To Editor, known for tutorials that skip the fluff and get straight to what works. She writes across AI, homes, phones, and everything in between — because life doesn't stick to categories and neither should good advice. With years of experience in tech and content creation, she's built her reputation on turning complicated subjects into straightforward solutions. Kaycee is also an award-winning poet and co-editor at Fox and Star Books. Her debut collection is published by Bloodaxe, with a second book in the works.
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