This week, the social network site has given its instant messaging service an upgrade which means it will load twice as fast as before, while the app itself is a quarter of its original size.
In a statement, the company said: "We reduced Messenger's core code by 84 percent -- going from 1.7+ million lines of code to 360,000 -- and we rebuilt our features to fit a new simplified infrastructure.
"Fewer lines of code makes the app lighter and more responsive, and a streamlined code base means engineers can innovate more quickly."
The new version means Messenger will open up, download and update quicker for all users, including those with older devices or in areas with lower connectivity.
However, the rebuild will mean some features will be temporarily unavailable, but Facebook is working on bringing them back.
The social media brand added the update "lays the foundation to fulfill our vision for private messaging and interoperability across apps", as the firm looks to integrate Messenger, Instagram and WhatsApp.