Adding a "Fax Number" when adding a new contact in my iPhone 5, ios6

Question

When adding a new contact, I"m confused when I get to the "phone contact numbers".

I only see Mobile and Home. I want to add a fax number, but it isn't available and it isn't offered in Add another field.

Answer 1

On your contact, click on the label type :

And it will give you access to the label types.

These are iOS 7 screens, but it's the same on older versions !