You also need better navigation of the phone book
The top menu gets you a list of contacts
Selecting a contact lets you edit that contact
Selecting "Set Primary Location" lets you chose one of several numbers under that contact.
It would be nice if you BOLD the primary contact, else, how do you know which is already set.

THEN ....
ready to edit the next contact, but you have to go back to the primary "CONTACTS" tab.
Why not have :

CONTACTS
Phone Book / Create Group / Create Contact

Why is Create Group lumped with the Phone Book? That looks cluttered.