How to configure the Phonegap app to be fixed to only portrait mode, I there any possibility to do it with CSS or JavaScript so that I should be able to get the consistent behaviour across the platforms
I found this useful post detecting-displays-orientation-change-on-mobile-devices-with-accelerometer-a-platform-indipendent-approach
Here it is explained how to detect the orientation, but I need to configure it
Is it possible through CSS3 Media queries?
To fix your orientation in portrait mode just add the below line in your activity tag in AndroidManifest.xml file:
android:screenOrientation="portrait"
or this in the activity class:
setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);