If you deploy to development locally on your laptop, you can enter the following URL into your mobile phone browser:
[your IP address]:8080/index-mobile.html
Please make sure your mobile phone and your laptop are connected to the same (wireless) network connection.
You can deploy your application to your cloud slot. If you succeeded doing this you can go to you mobile app with the browser on your phone using the cloudslot url.
You can also view your app with the browser from your computer