Facebook Lite is a stripped down version of the Facebook app, introduced for the Android mobile platform. The app was developed to meet the needs of users with very limited data quotas or hooked up to unreliable mobile networks.
This app features the fundamental Facebook functionality minus the bells and whistles. Weighing just under 1 MB compared to the 33 MB regular offering, Facebook Lite stays true to its name without compromising on key Facebook features.
While it is true that there has been a great deal of mobile penetration in the developing world, it's important to remember that cellphone networks in these regions aren't as reliable as those in the developed world. This lightweight version of the Facebook app does a great job catering to the needs of cellphone and Facebook users in the developing world.