Setting a Screenshot as Your iOS App’s Launch Image
Set the launch image of your app to give the user immediate feedback that the app launched.
Connect your device to your Mac.
In the Devices organizer, select Screenshots for a device or for the Library section.
Select an image.
Click “Save as Launch Image.”
Specify the name of the image and the target app, and click Next.
A launch image acts as a placeholder for your app’s user interface at launch time. When the user launches your app, the iOS presents this image until your app displays its main window and starts responding to events.
- “Adding App Icons and Launch Images” in App Distribution Guide