My friend and I were talking about movies while riding in the car, and we agreed that we should watch Dumb and Dumber later in the week. Neither of us searched for it, and I only had my iPhone in my pocket. The next morning, I saw a Dumb and Dumber-related ad on YouTube on my computer. I have Siri configured not to respond to "Hey Siri," and I don't use Google on my phone beyond the YouTube app. Could my phone or another device have been listening, or is there another explanation? What steps can I take to reduce this kind of tracking?
3 Answers
It’s possible the phone briefly activated because it detected something resembling its wake phrase, but that doesn’t necessarily mean the conversation was recorded and used for advertising. Check your iPhone’s microphone permissions under Settings > Privacy & Security > Microphone, and review which apps are allowed to use it. You can also check whether Siri is enabled and look for the orange microphone indicator when an app is actively using the mic.
There’s no solid evidence that phones routinely record every nearby conversation to select ads. A more likely explanation is coincidence, shared data from another device or account, or an accidental voice-assistant activation. If you want to test it, disable microphone access for YouTube and other apps temporarily, turn off ad personalization, and see whether similar recommendations continue.
Targeted ads don’t require your microphone. YouTube and other services can use account activity, browsing history, advertising IDs, location, device connections, and patterns from people around you. The timing can feel extremely specific, especially if the movie had already been searched or watched on a linked device. Review your Google and YouTube ad-personalization settings, pause activity tracking if you prefer, and reset or disable your advertising identifier.

Related Questions
Lenovo Thinkpad Stuck In Update Loop Install FilterDriverU2_Reload