Facebook Lite for Android was created by the markers of Facebook. If you are in an area that does not have much of an internet signal, or you are using pay-as-you-go internet, Facebook Lite will cost less to use because it won’t use as much data as the original Facebook app. Plus, the Facebook Lite app only uses 4.5MB of space on your phone, which is less that the original, since the original uses 162MB of space on your Android device.