Maybe check your data archive to see if Facebook’s algorithms know who you called.
This screen in the Messenger application offers to conveniently track all your calls and messages. But Facebook was already doing this surreptitiously on some Android devices until October 2017, exploiting the way an older Android API handled permissions.
Sean Gallagher –
This past week, a New Zealand man was looking through the data Facebook had collected from him in an archive he had pulled down from the social networking site. While scanning the information Facebook had stored about his contacts, Dylan McKay discovered something distressing: Facebook also had about two years worth of phone call metadata from his Android phone, including names, phone numbers, and the length of each call made or received.
Full Article.
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