Antminer s3 no ethernet setup
You need to set your computer to bridge the connection from the interface that it is using to connect to your phone and the connection to the ethernet interface your Antminer is connected to. In this way, you share your phone's internet connection with your Antminer.

To do bridging, typically you open up whatever network interface settings are available for your OS. Then there is usually an option to create a bridge, and from there, you just follow the instructions.