copy contact from all to personal address book

Whenever someone sends contact details to my iPhone, Contacts defaults the save to All Contacts, but won't add the contact to my personal address book. How do i copy a contact from the All Contacts directory to my personal address book using the iPhone only? Thus far it has been necessary to sync contacts through iTunes and then copy the vcf, but there must be an easier, more direct method … surely there must …

Can someone help please?

Many thanks