Facebook has announced a "Lite" version of its Android Messenger app.<br />The new bare-bones Messenger app is designed for older phones with less memory and less powerful processors.<br />The announcement marks Facebook's latest effort to expand its reach in developing countries, following the launch of Facebook Lite, a stripped-down version of its flagship app.<br />The app rolls out today to users in Kenya, Tunisia, Malaysia, Sri Lanka and Venezuela, before expanding to other markets in coming months.