I have a Cordova app running Cordova CLI 6.4.0. During load, there is a blank white screen for a solid 4-6 seconds on load after the splash screen. This same thing happens d
When you build the apk-file, be sure to include "--prod" in the command:
ionic cordova build --release --prod android
This optimizes performance and decreases boot-time from 15 seconds (debug build) to 3 seconds (production build) in our app.