Before we start, download the Authenticator App from your Apple device’s App Store and set it up as your main Two-Factor Authentication (2FA) option. Here is how to set up it.

Open the Facebook app and head to your profile, and tap the three lines in the bottom right.

Scroll down and tap on Settings & Privacy > Settings > See more in Accounts Centre.

In Account Center, tap Password and security > Two-factor authentication.

Select your Facebook account, verify it by entering the requested code, choose the Authentication app option, and tap Next.

Facebook will show options: Copy key or View barcode/QR code.

Option 1: Copy the key to manually add the account in the Authenticator App.
Option 2: Screenshot the QR code to add it via Photo or File on the Authenticator App.

Open the Authenticator App and tap the + button.

Option 1: Tap Manually - Paste the key under Secret Key, complete the Service and Account sections, and tap the plus to look for the icon.
Option 2: Tap Photo or File - Select the photo or file to scan the QR code and add the account automatically.

Once added, you’ll see a 6-digit code for Facebook in the Authenticator App. Tap on the code to copy it and complete the pairing.

Head back to the Facebook app and tap Next. Paste the 6-digit code when prompted. Complete the setup by tapping Next again.

Congratulations! You have successfully set up two-factor authentication for your Facebook account.