Contacts Picker

Contacts Picker allows the user to select one or more contacts (or their properties) from the list of contacts displayed in the contact view controller.

using SA.iOS.Contacts 
...
ISN_CNContactStore.ShowContactsPickerUI((result) => {
    if (result.IsSucceeded) {
        foreach (var contact in result.Contacts) {
            Debug.Log(contact.GivenName);
        }
    } else {
        Debug.Log("Error: " + result.Error.Message);
    }
});

All loaded contacts will be represented as ISN_CNContact object instance