CNET: How to remove your phone number from Facebook (and prevent targeted ads)

CNET: How to remove your phone number from Facebook (and prevent targeted ads) . “If you use two-factor authentication (2FA) to secure your Facebook account, you likely, at some point, gave Facebook your phone number. 2FA adds an almost impenetrable layer of security to your Facebook account, since it requires you to enter a code sent via text message before logging in. What you likely didn’t know was that Facebook would use that data — your phone number — to target you with ads.”