New iPhone 16 - cannot log in to Facebook. Nov 2024

Ensure you are logging in with the correct information such as your email address and password, remember these will be case sensitive, so ensure you have typed the information correctly.

If you are logging in from a new device, you may need to "approve" the log-in from an older device you have used to log-in before if you have two factor authentication enabled.

You may find the following resource helpful which is from Facebook regarding log-in issues.

https://www.facebook.com/help/283100488694834

Try to uninstall and reinstall the Facebook app, this will not only ensure you are running the latest version but might also help fix this issue if there is an issue with the app at present.

As this is an Apple Support forum, you may be better off looking through Facebook's help centre and resources for more specialised assistance.

https://www.facebook.com/help/messenger-app/105487009541643