Facebook almost certainly has your phone number and email address, even if you never handed them over. Now the firm has a new tool to let people check if Facebook has that data, and delete it. Meta/Shona Ghosh"You can ask us to confirm whether we have your phone number or email address," the firm states. It's possible that Meta isn't really technically deleting your phone number and emails at all, said Boiten. "It may well be that they only implement something like this on the outside — so at a point the phone number threatens to go outside the system, it says, 'This phone number is one we've been told we can't use,' rather than really removing information."

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