I have setup a viewcontroller using storyboard + autolayout, however I am having some problems (re)sizing a subview correctly for 3.5"/4" display.

This is what I have setup in storyboard:

[![Storyboard](https://i.stack.imgur.com/h1sTu.png)](http://i60.tinypic.com/1zzhlpu.jpg)

The scrollview correctly keeps its 20px space to the bottom according to the constraint. However the subviews (**red**), which I add in the below loop to the scrollview should have the same height as the scrollview, but they don't :(

```
int pageCount= 3;

self.scrollView.delegate= self;
self.scrollView.pagingEnabled= YES;
self.scrollView.scrollEnabled= YES;
self.scrollView.showsHorizontalScrollIndicator= NO;
self.scrollView.showsVerticalScrollIndicator= NO;

self.scrollView.contentSize= CGSizeMake(self.scrollView.bounds.size.width * pageCount, self.scrollView.bounds.size.height);

NSLog(@"viewcontroller frame: %@ (bounds: %@)", NSStringFromCGRect(self.view.frame), NSStringFromCGRect(self.view.bounds));
NSLog(@"scrollview frame: %@ (bounds: %@)", NSStringFromCGRect(self.scrollView.frame), NSStringFromCGRect(self.scrollView.bounds));
NSLog(@"scrollview content size%@", NSStringFromCGSize(self.scrollView.contentSize));

 for (int i= 0; i < pageCount; i++)
 {
  UIView* neutralContainer= [[UIView alloc] initWithFrame:CGRectMake(0.0 + i * self.scrollView.frame.size.width, 0.0, self.scrollView.frame.size.width, self.scrollView.frame.size.height)];
  neutralContainer.backgroundColor= [UIColor redColor];

  NSLog(@"containerview frame: %@ (bounds: %@)", NSStringFromCGRect(neutralContainer.frame), NSStringFromCGRect(neutralContainer.bounds));
  [self.scrollView addSubview:neutralContainer];

```

As it seems, the scrollview frame i print in console (see screenshot) remains the same, no matter if i start the 4" or the 3.5" simulator. i would expect to get different values.  

Can someone explain to me what i am doing wrong?