Not that I talk about flashlights, but I just switched off this "feature" on my iPhone. Apparently FB's Messenger app listens in on what you're talking about for advertising purposes.

http://nypost.com/2016/06/02/how-to-stop-facebook-from-listening-to-everything-you-say/
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"Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars." - Martin Luther King, Jr.