Provide the user with an easier way to deactivate a field section when editing a contact
I've found two ways for the user to deactivate a field section when editing a contact: tapping the name of a different section or tapping a small area below the last name line. The first option activates a different section. And the second is hard to do. So, I suggest you to provide the user with another way to deactivate a field section without activating another section.