Android Note 2 Back Button

Hi Guys,

I have been surfing couple of threads.but had no luck in this. how do i activate the "Android (note 2) device" back button?

Have tried methods by "cranberrygame" as well but still in vain..

I have tried the browser action as well..but it does not work in the actual device, just works in the desktop browser..any light you can shed on this? or a perfect tutorial?

Thanks.

ameer.