One of the biggest complaints about the Facebook app is that it can take up too many resources, particularly on older phones. Which is probably why Facebook released Facebook Lite, a super lightweight version of its app directed at developing markets.

Currently, the app is only available officially in a few countries—Bangladesh, Nepal, Nigeria, South Africa, Sudan, Sri Lanka, Vietnam and Zimbabwe.
The app itself is incredibly spartan, with very little excess.
The APK is about 252KB, as opposed to the 27MB that the main app can usually take up, so if you're on an older device, a slower network, or just don't want all the extra junk, Facebook Lite is probably exactly what you were looking for.

Download via Google Play

Source: http://m.appfishers.com/forum/latest-tech-and-app-news/35-facebook-releases-facebook-lite-android-for-nigeria-and-others-drastically-reduces-app-overhead