Splash Screen showing white

Ionic Framework ionic-v3
1 
    <preference name="SplashMaintainAspectRatio" value="true" />
    <preference name="FadeSplashScreenDuration" value="300" />
    <preference name="SplashShowOnlyFirstTime" value="false" />
    <preference name="SplashScreen" value="screen" />
    <preference name="SplashScreenDelay" value="3000" />
    <preference name="ShowSplashScreenSpinner" value="false" />

I tried

ionic cordova run android --prod

Splashscreen appears for 3 secs than I changed it to SplashScreenDelay 2000 and shows white again