2) Connect to the working network connection and open the FaceNiff app.
3)Now click the red button and it will then turn green when the sniffer is on.It is like Firesheep for android devices.
(Firesheep is a Firefox add-on that allowed unscrupulous users to do the same thing. FaceNiff has a leg up on Firesheep though, since the app runs on Android phones, doesn’t require any real customization to run, and even supports WPA encrypted wireless networks, as long as you’re already on the network.Press the enter button and It would show a list of all the accounts which are connected to the network and you could hi jack into that all accounts.)
4) Click on the account which you wish to hack and you will automatically logged in the account in which you wish you to.
5) Now you can do whatever you want with the hacked account.