# My ionic app is working with --devapp. But my app turn just white screen after build

**URL:** <https://forum.ionicframework.com/t/my-ionic-app-is-working-with-devapp-but-my-app-turn-just-white-screen-after-build/181006>\
**Category:** ionic-v3\
**Created:** [January 7, 2020, 12:44am UTC](https://forum.ionicframework.com/t/my-ionic-app-is-working-with-devapp-but-my-app-turn-just-white-screen-after-build/181006 "2020-01-07T00:44:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![alvintanu](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/alvintanu/32/130095_2.png) [@alvintanu](https://forum.ionicframework.com/u/alvintanu)\
**Post date:** [January 7, 2020, 12:44am UTC](https://forum.ionicframework.com/t/my-ionic-app-is-working-with-devapp-but-my-app-turn-just-white-screen-after-build/181006/1 "2020-01-07T00:44:06Z")

</div>

This is my first time using Ionic, also my first time asking question in a forum. So please, tell me if I need to supply or add more info to make my question clearer.

What I meant by did not work is my app got white screen after I built it on my android. But somehow when I used --devapp it is working just fine.

**cordova**  **@**  **9.0.0**  
node v12.13.0

Ionic:

Ionic CLI : 5.4.5 (/usr/local/lib/node\_modules/ionic)  
Ionic Framework : @ionic/angular 4.11.4  
@angular-devkit/build-angular : 0.801.3  
@angular-devkit/schematics : 8.1.3  
@angular/cli : 8.1.3  
@ionic/angular-toolkit : 2.0.0

Cordova:

Cordova CLI : not installed  
Cordova Platforms : not available  
Cordova Plugins : not available

Utility:

cordova-res : 0.8.1  
native-run : 0.2.9 (update available: 0.3.0)

System:

Android SDK Tools : 26.1.1 (/Users/alvin/Library/Android/sdk)  
NodeJS : v12.13.0 (/usr/local/bin/node)  
npm : 6.12.0  
OS : macOS Sierra