Facebook texts the 6-digit code to your mobile phone.
Losing access to your Facebook account can feel like losing touch with a part of your digital life. Whether you’ve forgotten your password, lost access to your email, or are facing a hacked account, Facebook provides a dedicated tool for these situations. wwwfacebookcom loginidentify
On the recovery options screen, look for a link at the bottom that says or "Cannot access these?" . Facebook texts the 6-digit code to your mobile phone