Historically the most reliable way to use Facebook Chat on Maemo devices. In its prime, it allowed users to connect to Facebook's XMPP gateway to send and receive real-time text messages. MicroB / Maemo Browser:
Use the Bitlbee console on your N800 to authenticate your Facebook account. The modern server will handle the secure OAuth login, and your Facebook friend list will appear as IRC users on your tablet. Verified Method 2: The Matrix Protocol Bridge facebook messenger for nokia n800 verified
If you are looking to get a result in 2026, the browser-based :// facebook.com is the only method that does not require repository patching. Historically the most reliable way to use Facebook