I know that I am very late for this, but the solution to this problem is quite simple and is even shown in one of Apple's own tutorials .
Assuming you started with an "Empty Project", created a storyboard from scratch, and configured the storyboard as the main interface, you need to delete several lines in the first AppDelegate.m method.
It:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
:
return YES;