Because that is the experience people have shared online: https://www.reddit.com/r/privacy/comments/8e5m73/twitter_is_forcing_me_to_add_my_phone_number_how/ ht

Because that is the experience people have shared online: https://www.reddit.com/r/privacy/comments/8e5m73/twitter_is_forcing_me_to_add_my_phone_number_how/ https://www.reddit.com/r/privacy/comments/8e5m73/twitter_is_... https://www.facebook.com/help/community/question/?id=278494835901458 https://www.facebook.com/help/community/question/?id=2784948... To make matters worse, Twitter and Facebook are not up-front about this requirement. They will let you create an account, and then lock you out or suspend you until they get a phone number.