If you keep contacts in other Internet accounts — such as iCloud, Google or Yahoo! — you can access all of them in Contacts.
Create groups automatically
Create a Smart Group by identifying something that some of your contacts have in common. For example, you could create a Smart Group called ‘Book Club’ that includes any contact with ‘book’ in the Note field of their card.
Show it on a map
Want to see where one of your contacts lives? You can open a map right from the Contacts app.