Today Facebook is making Messenger lite app available to more that 130 countries. Facebook Messenger, along with the Facebook app, have long been criticized for being resource hogs on Android devices. In response, Facebook has made Facebook Lite and Messenger Lite available for devices with limited processing power.
The new Facebook Messenger Lite does not all the bells and whistles of the original Messenger app. For example, phone and video calls are missing. In addition, the app will keep you connected should you be in an area where data coverage is poor. Facebook Messenger Lite is pretty much a simple messenger app that's been designed to quickly send a message to your families and friends on any Android phone you have without the frustration you can sometimes experience with its full featured bigger brother.
Facebook did not post a list of countries where they made Messenger Lite available, so just go to Google Play Store and you should see it if it is. Otherwise, you can still search the web for the APK.