Facebook launched 0.facebook.com a stripped-down version of its mobile site in partnership with more than 50 mobile operators from 45 different countries for users without unlimited data plans. To see where its available take a look at the list below.
The 0.facebook.com site is only available on the networks of these operators. Everyone else can still access Facebook from the standard mobile site m.facebook.com or the mobile site for touch screen mobile devices, touch.facebook.com.
This site is basically aimed at developing countries where mobile internet connection is slow and mobile internet costs too much.