Before you start packaging the project and building the final IPA file, you still have one more thing to change in the game. Maybe you don't have to do it in either the editor or XCode. It is changing the game icon and splash screen. Unless you want the final game to have the default Unreal Engine logo as its icon and splash screen, you'll have to change it manually.

You can change it by replacing already built images with new ones. You can change these assets per-project or per-Unreal-Engine build. If you are working on a sequel and all of the games have to have the same splash screen and the same icon, then you don't have to waste your time and replace them every time you make a new chapter for your game.

In this case, you'll have to replace all of the images in the Users/Shared/UnrealEngine/4.5/Engine/Build/IOS/Resources/Graphics/ directory, where all of the splash screen sizes and icons are present. Changing them in this directory means that whenever you start a new...