Mobile Number or Email Change in Facebook

I can't log in my number or email change in Facebook?

If you can't remember your login email address or the mobile number on your account, or one or both of these recently changed:

1. Try using your username (ex: https://www.facebook.com/username) and password to log in. If you don't know your username, ask a friend to go to your timeline and find it for you.
2. Try entering any other email addresses or phone numbers you might have added to your account. If you've added a mobile number to your account, you can log in by entering that number in the Email field. Start with the country code and remove any leading zeroes and symbols.
3. Ask one of your Facebook friends to view your timeline and send you the email address listed on your account. To get to your email address, have your friend:
   • Go to your timeline and click on the Info
   • Scroll down to Contact Information and copy down your email address
4. If you still can't get into your account after trying the suggestions above, try locating your account on the password reset page. Learn more: 

See video here 

After logging in, visit the Account Settings page to find the email address linked to your Facebook account or update your mobile phone number. 

Source: Facebook.com