Run android --device not uploading app.scss

Hey guys, when i run ionic serve all the styles and plugins are fine.
But when i connect android device and run ionic cordova run android --device the app.scss files are missing, also my native plugins like camera and sms are not there. The splashscreen is gone too.

My ionic info :

@ionic/cli-utils  : 1.19.0
ionic (Ionic CLI) : 3.19.0

global packages:

cordova (Cordova CLI) : 8.0.0 

local packages:

@ionic/app-scripts : 3.1.6-201712271536
Cordova Platforms  : android 7.0.0
Ionic Framework    : ionic-angular 3.9.1-201711081842


Android SDK Tools : 26.1.1
Node              : v6.4.0
npm               : 5.4.2 
OS                : Linux 4.10