If you chose the "Text Message (SMS)" option during setup:
For authenticator apps: 30 seconds. For SMS: usually 5-10 minutes, but it expires after the first use. facebook six digit code
To get a Facebook six digit code, follow these steps: If you chose the "Text Message (SMS)" option
"Your Facebook confirmation code is: 123456. Don't share this code with anyone; Facebook representatives will never ask for it." facebook six digit code
Many users accidentally block Facebook's shortcodes. Go to your phone's "Blocked Numbers" list. Unblock the following numbers: