我的应用程序不会将信箱和对象移动到游戏环境之外

Hi I am working on an app and it was almost finished until I got my iPhone 5 and tested my app on this and now it shows a large white rectangle at the bottom of the screen (which looks like the extension of the screen) I assumed the app would automatically letterbox its self so this would not appear and the objects that you can move freely on the screen at go over this white rectangle which makes the game useless.Hi I am working on an app and it was almost fin