As you know that We use VPN tricks in Airtel, Idea, Reliance & Other networks for which we need to know the open ports of the network which is used as a gateway for free Internet. You dont need pc to do so. You can also scan all these ports with your smartphone. The following apps, I am providing are used to scan open ports. Download from the links given below~ http://www.soft9.us/download.php?app_id=186739 Just install & put your host and port range in the given boxes. Press scan button & wait for scanning completion!!! ENJOY FREE VPN INTERNET & STAY CONNECTED!!!