Nokia N800 is a legacy "Internet Tablet" from 2007 running the Maemo 4 (OS2008)

Part 3: The "Verified" Workaround – The XMPP Hack (2008–2010)

The only way to get a "Facebook Messenger" experience on an N800 back in the day was using the built-in Chat & IM application. Here is the verified method that power users documented on Internet Tablet Talk.

Here’s a useful blog-style post based on that title. It’s written as if from a mid-to-late 2000s tech enthusiast’s perspective, focusing on practicality, verification steps, and the “hacky” joy of the Nokia N800 internet tablet. facebook messenger for nokia n800 verified

Conclusion: What Does "Verified" Mean for the N800?

To answer the keyword query directly: There is no official, Facebook-verified Messenger app for the Nokia N800. However, between 2008 and 2014, the community-verified method was to use Pidgin or Empathy with Facebook’s XMPP service. If you see a listing or old download claiming a "verified Facebook Messenger for Nokia N800," it is almost certainly a custom wrapper or a scam—Facebook never released such an app.

What Works

“I use Pidgin on my N800 with Facebook XMPP. Works fine for simple messages. No video or voice, but the browser can load m.facebook.com for the rest.”
— poster ‘tmo_fan’, June 2011