I have used other android smartphones before, where I used to share Desktop PC's internet for using internet connectivity on mobile devices via USB. Typically the steps were Settings > Wireless & networks > USB Internet (sharing Windows PC internet via USB cable), which was easy.
But in Vibe S1, it has Vibe UI. Activating developer options, I tried to Switch to Android UI. But there was no such option for Vibe S1 under developer options. It would be great if anyone can find out if switching to Android UI is really possible.
Under settings I also searched through other probable options but couldn't succeed.
Currently I am using PC's internet on Vibe S1 via Wifi connectivity only.