On creating VCard not getting contact image and notes in iOS

Fetching contact list using CNContactStore and converting complete contact list to VCard, all are coming fine except i am not getting contact image and notes.

   NSMutableArray *contactsArray=[[NSMutableArray alloc] init];
   CNContactStore *store = [[CNContactStore alloc] init];
   [store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {
    if (!granted) {
        dispatch_async(dispatch_get_main_queue(), ^{
        });
        return;
    }
    NSMutableArray *contacts = [NSMutableArray array];
    NSError *fetchError;

    CNContactFetchRequest *request = [[CNContactFetchRequest alloc] initWithKeysToFetch:@[[CNContactVCardSerialization descriptorForRequiredKeys], [CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName]]];

    BOOL success = [store enumerateContactsWithFetchRequest:request error:&fetchError usingBlock:^(CNContact *contact, BOOL *stop) {
        [contacts addObject:contact];
    }];
    if (!success) {
        NSLog(@"error = %@", fetchError);
    }

    for (CNContact *contact in contacts) {
        CNContact *contact1 = contact.mutableCopy;
        [contactsArray addObject:contact1];
    }

    NSData *vcardString =[CNContactVCardSerialization dataWithContacts:contactsArray error:&error];

    vcardStr = [[NSString alloc] initWithData:vcardString encoding:NSUTF8StringEncoding];
    NSLog(@"vcardStr = %@",vcardStr);
  }];