@kevinvangelder It was from the initial idea of these two:

1. Splash screen should be loaded, as soon as possible, before the bundle is loaded, which needs to be handled on native level for both iOS and Android. It requires changes on project files and configurations in /ios and /android directory structure that we don't include in the boilerplate.
2. From the convo with @ryanlntn, the best practice to avoid the white flicker is to use react-native-splash-screen. (White flicker issue: [Initialization] Launch screen white flash facebook/react-native#1402)