Facebook, in its prime, released official Facebook apps for S40 devices. However, those official servers were shut down around 2015. Today, to get Facebook Chat working, you rely on modified third-party JAR files or archived versions of the official app that still support basic XMPP (Extensible Messaging and Presence Protocol) chat.
It is important to note that many of the "Facebook Chat jar" files available online were not official releases. Because Java was an open development platform, independent programmers created their own chat clients. Popular third-party apps included names like (which was eventually acquired by Facebook) and various generic "Facebook Chat" apps uploaded to forums.
But you'd also need:
No native Facebook app existed; users relied on that implemented XMPP (Jabber) , which Facebook Chat used until 2014–2015.
: On your phone, go to Menu > Gallery (or Applications), find the file, and select Open/Install .
. While modern social media apps have moved on, you can still find ways to use Facebook Chat on this Java-based phone using
