Grey Screen Issue When app is loading

HI Team

We have built an application with Ionic 3 , and while loading the app we see 2-3 seconds of Grey screen. Need assistance in resolving the issue.

Regards
Bharghav

What is your ionic info output?

ionic (Ionic CLI) : 4.1.1 (C:\Users\malrg\AppData\Roaming\npm\node_modules\ionic)
Ionic Framework : ionic-angular 3.9.2
@ionic/app-scripts : 3.1.8

Cordova:

cordova (Cordova CLI) : 8.0.0
Cordova Platforms : android 7.0.0
Cordova Plugins : cordova-plugin-ionic-keyboard 2.0.5, cordova-plugin-ionic-webview 1.1.1, (and 19 other plugins)

System:

Android SDK Tools : 26.1.1 (E:\Program Files\AndroidSDK)
NodeJS : v8.11.1 (C:\Program Files\nodejs\node.exe)
npm : 5.6.0

ionic (Ionic CLI) : 4.1.1 (C:\Users\malrg\AppData\Roaming\npm\node_modules\ionic)
Ionic Framework : ionic-angular 3.9.2
@ionic/app-scripts : 3.1.8

Cordova:

cordova (Cordova CLI) : 8.0.0
Cordova Platforms : android 7.0.0
Cordova Plugins : cordova-plugin-ionic-keyboard 2.0.5, cordova-plugin-ionic-webview 1.1.1, (and 19 other plugins)

System:

Android SDK Tools : 26.1.1 (E:\Program Files\AndroidSDK)
NodeJS : v8.11.1 (C:\Program Files\nodejs\node.exe)
npm : 5.6.0

I love when people have 2 accounts and post the same thingsā€¦

Outdated. Update.

Your Cordova tooling seems to be out of date, which might be causing all kinds of problems.
You can read about how to figure out the current Cordova versions and how to update CLI, platforms and plugins here: https://ionic.zone/cordova/update

What device are you testing on? OS version?

Does this also happen with a new project created with ionic start?