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> Facebook spokesperson Jay Nancarrow told TechCrunch that the settings “are not new,” adding that, “the setting applies to any phone numbers you added to your profile and isn’t specific to any feature.”

They're not joking when they say this isn't new.

I remember a situation while I was still in high school (2011-2012 maybe?) in which someone tried to prank me by sending me SMS from a number I didn't have. I figured out exactly who it was using a simple Facebook search. The best you could do even then was to set it to friends-only, and the prankster didn't do that.

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