Facebook, which is quite a hit on smartphones such as Apple’s (s aapl) iPhone, is making a debut on Sony Ericsson’s Xperia X1 phone as a panel. Panels are special interface mechanisms unique to Xperia; they allow phone users to interact with a specific web service or an application.
With this release, Facebook is now available on the iPhone, Blackberry and Windows Mobile (almost) platforms. No Facebook on Nokia’s (s nok) Symbian or Google’s (s goog) Android — not yet, anyway.
I wonder how many people will actually end up buying the X1 device, which is about to go on sale. I returned the review phone earlier today so I don’t know how this app, which you can download for free, actually works. But I do know you can use it to check status updates, friends’ profiles, pics and notifications. Facebook on the iPhone remains one of the best mobile web apps — and even other versions of Facebook pale in front of its capabilities. (Read: my X-1 Review.)