Ionic4 Geolocation android

Ionic Native
1 
import { Geolocation } from '@ionic-native/geolocation/ngx';

...

constructor(private geolocation: Geolocation) {}

...

this.geolocation.getCurrentPosition().then((resp) => {
 // resp.coords.latitude
 // resp.coords.longitude
}).catch((error) => {
  console.log('Error getting location', error);
});

let watch = this.geolocation.watchPosition();
watch.subscribe((data) => {
 // data can be a set of coordinates, or an error (if an error occurred).
 // data.coords.latitude
 // data.coords.longitude
});

The above code from documentation works fine in browser, but doesn’t do anything in android device :frowning:
Permissions are all set up

        <config-file parent="/manifest" target="AndroidManifest.xml">
            <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
            <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
            <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
        </config-file>

any idea on this ?