New iPhone 16 Pro - cannot log in to Facebook.

I just thought I would put this out there in case someone else was having issues attempting to log into Facebook and getting an error "unable to log in". Thus, saving someone alot of frustration and disbelief.

I tried everything from reinstalling App, restarting the device, changing password, etc and none of them worked. I still got the "unable to log in" errors. The next sentence below was the solution to fixing this and allowing me to log on.

Make sure you disable your "Two-Factor Authentication" (text messages and authentication app), otherwise you will not be able to log onto the Facebook App on your new phone.