I have an App that was created a long time ago and updated it to use Storyboards. All the views have been rebuilt and hooked up. However, the App does not use the entire h
I faced the same issue too. In my case I am using a MainWindow.xib file.
And when I print the frame of Window its {0,0}{320,568} but the app did not respond to the area after 480 px.
What I did , is to open the Mainwindow.xib file in interface builder and set full Screen at Launch option selected.
I am attaching the screeshot where you can find this option.

this works out for me. You also try to find that If you are using a Mainwindow.xib then apply the same.
Hope it will help you to solve your issue. Enjoy coding..!!!