Therefore, using Facebook's chat functionality on the N800 has always required workarounds. In this context, "verified" takes on a different meaning. For a device like the N800, a verified method means using solutions that are:
From Internet Tablet Talk forums (circa 2010):
If you find a site claiming to offer a "verified" Messenger download for the N800, : facebook messenger for nokia n800 verified
A lesser-known but dedicated Maemo IM app, Conversations was preloaded on later versions of OS2008. It supported Jabber/XMPP out of the box. Users reported that adding chat.facebook.com as a custom server worked flawlessly for plain text messaging.
For native apps like fMobi that connected to Facebook via its APIs, "verification" occurred when the app redirected a user to Facebook's official login page. There, the user would enter their credentials and explicitly grant the app permission to access their data. The app never saw the user's password, and Facebook issued a unique, temporary token to the app, verifying its identity. Therefore, using Facebook's chat functionality on the N800
There is no official, verified Facebook Messenger app for the Nokia N800. The most reliable method today is using Facebook’s mobile web interface in the device browser if it still supports the required TLS/ciphers. For a full, secure Messenger experience, use a modern device and treat the N800 as a legacy device for basic browsing or alternative messaging services.
does not run modern Android or iOS, "verified" features likely refer to the functionality available through the native notification system or specific legacy clients: Notification Integration: It supported Jabber/XMPP out of the box
At first glance, this seems like a typo or a desperate hope from a vintage device collector. The Nokia N800 Internet Tablet, released in 2007, ran on the Linux-based operating system. Facebook Messenger, as a standalone chat application, did not officially launch until 2011—years after the N800’s prime. So, what does “verified” mean in this context? And was there ever an official solution?