It's probably being used for multiple purposes, regardless of the original intent. Recall that FB originally collected phone numbers for 2FA, but years later de

It's probably being used for multiple purposes, regardless of the original intent. Recall that FB originally collected phone numbers for 2FA, but years later decided to use the information for ad targeting[1]. Not that Facebook is unique in this regard, of course; my own experience at companies which collect various bits and pieces of customer data is that, once the data is in a database somewhere, people are pretty good at finding excuses to use it. [1] https://www.impactplus.com/blog/facebooks-using-2fa-phone-numbers-for-ad-targeting https://www.impactplus.com/blog/facebooks-using-2fa-phone-nu...