NSString *vCardString = @"BEGIN:VCARDnVERSION:2.1nN:Standard11.3,Joe;nADR:PO Box 555,Suite 55,5555 Any Street,San Diego,CA,92111,USA;;nEND:VCARD";

    CFDataRef vCardData = (CFDataRef)CFBridgingRetain([vCardString dataUsingEncoding:NSUTF8StringEncoding]);  ABAddressBookRef book = ABAddressBookCreate();
    ABRecordRef defaultSource = ABAddressBookCopyDefaultSource(book);
    CFArrayRef vCardPeople = ABPersonCreatePeopleInSourceWithVCardRepresentation(defaultSource, vCardData);
    CFRelease(vCardData);
    for (CFIndex index = 0; index < CFArrayGetCount(vCardPeople); index++) {
        ABRecordRef person = CFArrayGetValueAtIndex(vCardPeople, index);
        ABAddressBookAddRecord(book, person, NULL);
        //CFRelease(person);
    }
    CFRelease(vCardPeople);
    CFRelease(defaultSource);
    ABAddressBookSave(book, NULL);
    CFRelease(book);