UIScrollview is not scrolling beyond UIView height even though UIView frame is increased

I am trying to create a screen where scrolling is required in iphone 3.5 inch screen . I have attached images which contain the configuration of uiviewcontroller , uiscrollview , uiview . The problem is eventhough the height seems to increase , when i run iPhone 4s , some part of scroll is hidden beyond the UIView (Although uiview height shows 700 when i print the height in console) . What might be the problem ? Please help me ?