Are you connected to the internet? Haha, seriously though, are you?
Thinking you have the right login email and password (as well as you're linked to the web) there's a few points that could be causing your troubles:
Facebook No Login
Are you obtaining a mistake message? If so, examine the Facebook help page for descriptions as well as fixes to well-known issues.
See to it you do not have any type of extensions or antivirus programs running that are blocking Facebook.
Have you attempted clearing the app's cache? Go to Settings > Applications > Facebook > Clear Cache. If this does not function you can try clearing information too and also as a last resort uninstalling and also re-installing the application completely.
Did you sign up with your contact number? Make sure you key in the nation code as well when visiting.
If the app is telling you to upgrade your email address, this is more than likely because your email web server is classifying your Facebook emails as spam.
If you've just recently signed up for Facebook you could need to confirm your account initially. If you have actually recently changed your password, make sure you're attempting to log in with the new password and not the old one.
If you're logging in via a browser, see to it you have cookies allowed which facebook.com is included in your list of risk-free websites.
See to it you have one of the most current version of the Facebook app for Android.
