Ipad Simulator showing Iphone4?

Delegate.m


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   
    UIStoryboard * storyboard = [self grabStoryboard];
    self.window.rootViewController = [storyboard instantiateInitialViewController];
    [self.window makeKeyAndVisible];
    return YES;
}
- (UIStoryboard *) grabStoryboard {
    int screenHeight = [UIScreen mainScreen].bounds.size.height;
    UIStoryboard * storyboard;
   
    switch (screenHeight) {
        case 480:
            storyboard = [UIStoryboard storyboardWithName:@"Iphone-4" bundle:nil];
            NSLog(@"4");
            break;
        case 568:
            storyboard = [UIStoryboard storyboardWithName:@"Iphone-5" bundle:nil];
            NSLog(@"5");
            break;
        case 667:
            storyboard = [UIStoryboard storyboardWithName:@"Iphone-6" bundle:nil];
            NSLog(@"6");
            break;
        case 736:
            storyboard = [UIStoryboard storyboardWithName:@"Iphone-6-Plus" bundle:nil];
            NSLog(@"6+");
            break;
        case 1024:
            storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
            NSLog(@"Ipad");
            break;
        default:
            NSLog(@"Wron");
            break;
    }
   
    return storyboard;
   
}

When testing out how my images look on the Ipad2 it shows the images from the iphone4 and the debugger logs "4". This is the only simulator that I have an issue with. All of the other ones who their own images and log the correct screen.