inAppBrowser not responding with "facebook://" scheme

Was trying to open facebook native app and point to a facebook page.
The following code works when open a normal http link, but when i tried to use facebook:// scheme it doesnt response.

Is this the right way of doing it?

in .html:
<button (click)="launch('facebook://facebook.com/info?user=123456789')"</button>

in .ts:

import { InAppBrowser } from 'ionic-native';
import {Component} from '@angular/core';
@Component({
  templateUrl: 'build/pages/about/about.html',
  providers: [ InAppBrowser ]
})
    export class AboutPage {
    constructor(
      public globalVar: GlobalVar,
      private inAppBrowser: InAppBrowser
      ){
    }
        launch(url) {
                    InAppBrowser.open(url, "_system", "location=true");
            }
    }

Whitelist facebook url in your app