A splash screen appears when a user opens your app. If you don't define a splash screen, a default BlackBerry splash screen will appear.
Apps, like people, have only one chance to make a good first impression, so get creative and make a splash.
Don't crowd the splash screen with too much content. A simple layout of well-selected, well-placed elements is best.
Provide useful information. Consider adding information such as the app version or app loading progress to your splash screen.