ABAddressBookCopyArrayOfAllPeople not displaying all contacts

This is the code that i am using to fetch all the contact details in my iphone.It is working allright,But not all the contacts are displayed here.ANy idea why it is happening?By using addresspicker,i can see all those missing names and numbers.

-(void)viewWillAppear:(BOOL)animated { ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);

    __block BOOL accessGranted = NO;

    if (ABAddressBookRequestAccessWithCompletion != NULL)
    { // We are on iOS 6
        dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);

        ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
            accessGranted = granted;
            dispatch_semaphore_signal(semaphore);
        });

        dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
            }

    else { // We are on iOS 5 or Older
        accessGranted = YES;
        [self getContactsWithAddressBook:addressBook];
    }

    if (accessGranted) {
        [self getContactsWithAddressBook:addressBook];
    }


}

// Get the contacts.
- (void)getContactsWithAddressBook:(ABAddressBookRef )addressBook {

    contactList = [[NSMutableArray alloc] init];
    CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook);
    CFIndex nPeople = ABAddressBookGetPersonCount(addressBook);

    for (int i=0;i < nPeople;i++) {
        NSMutableDictionary *dOfPerson=[NSMutableDictionary dictionary];

        ABRecordRef ref = CFArrayGetValueAtIndex(allPeople,i);

        //For username and surname
        ABMultiValueRef phones =(__bridge ABMultiValueRef)((__bridge NSString*)ABRecordCopyValue(ref, kABPersonPhoneProperty));

        CFStringRef firstName, lastName;
        firstName = ABRecordCopyValue(ref, kABPersonFirstNameProperty);
        lastName  = ABRecordCopyValue(ref, kABPersonLastNameProperty);
        [dOfPerson setObject:[NSString stringWithFormat:@"%@ %@", firstName, lastName] forKey:@"name"];

        //For Email ids
        ABMutableMultiValueRef eMail  = ABRecordCopyValue(ref, kABPersonEmailProperty);
        if(ABMultiValueGetCount(eMail) > 0) {
            [dOfPerson setObject:(__bridge NSString *)ABMultiValueCopyValueAtIndex(eMail, 0) forKey:@"email"];

        }

        //For Phone number
        NSString* mobileLabel;

        for(CFIndex i = 0; i < ABMultiValueGetCount(phones); i++) {
            mobileLabel = (__bridge NSString*)ABMultiValueCopyLabelAtIndex(phones, i);
            if([mobileLabel isEqualToString:(NSString *)kABPersonPhoneMobileLabel])
            {
                [dOfPerson setObject:(__bridge NSString*)ABMultiValueCopyValueAtIndex(phones, i) forKey:@"Phone"];
            }
            else if ([mobileLabel isEqualToString:(NSString*)kABPersonPhoneIPhoneLabel])
            {
                [dOfPerson setObject:(__bridge NSString*)ABMultiValueCopyValueAtIndex(phones, i) forKey:@"Phone"];
                break ;
            }

        }
        [contactList addObject:dOfPerson];

    }
    NSLog(@"Contacts = %@",contactList);
    [self.tableView reloadData];
}