How can I setup 2FA if my mobile phone's camera doesn't work?

Google Authenticator doesn't support using your mobile device's front (selfie) camera. If your primary camera isn't working, use this workaround:

Scan the barcode with your front (selfie) camera using a QR Reader app. You'll see a link like this:

This link can then be used within the manual code entry in the Google Authenticator.