Can't log into Apple ID on iPhone
I changed my Apple ID password (kept username the same) by logging into: http://appleid.apple.com. Now I can't log into my Apple ID on my iPhone. I've verified that I have the correct password by logging out of my Apple ID account on the internet (using my laptop) and logging back in successfully.
I even deleted my iCloud account on the iPhone and then tried to log back in to the same account using the new password but it still fails to log in. Finally, I deleted my mail/contacts/calendars Apple ID email account, deleted my iMessages Apple ID account, and iCloud account, but STILL can't log back into my Apple ID using either the new or old password.
I already tried powering down and reseting via power-home buttons with no luck. I'm pretty desperate for ideas at this point.
iPhone 4S, iOS 6.1.5