How come my Apple ID password is not working?

Where isn't it working? What happens when you try to use the password? Error message(s)? Please try restating your question and explain exactly what you are trying to do. Include whatever problems you are having and any error messages.

What error message did you get when you tried to sign in? Where you attempting to download a new app or download an update of an app on your iPhone?

What error message did you get when you tried to sign in? Where you attempting to download a new app or download an update of an app on your iPhone?