Haha, no. It’s enough if one of your friends/relatives/etc. had allowed Facebook/Instagram/WhatsApp/etc. to scan their contact list. Your phone number is in the

Haha, no. It’s enough if one of your friends/relatives/etc. had allowed Facebook/Instagram/WhatsApp/etc. to scan their contact list. Your phone number is in there, just not shown, trust me. In fact Facebook used to show creepy suggestions when such cross-pollination of data occured, like “Click here to confirm that XXXXXX is your phone number!”, but they stopped doing that a few years ago.