If you're a big Facebook user, you may have stumbled across the fast-developing fMobi app for Nokia Symbian^3 smartphones. And when we say fast-developing we mean it – version 1.1.1b has just emerged, bringing with it another clutch of new features.

Check out five free Facebook alternatives for Symbian^3 for other app ideas

fMobi is the creation of Juuso Kosonen, and he's been moving at quite a pace in developing his brainchild. He's just rolled out fMobi version 1.1.1b, and chief among its new additions is support for sound notifications when chatting or from other applications.

New copy and paste features, a new status view so you can drop comments quicker, a status bar and various other UK fixes are among the other new features, but you can check out the full list for yourself at Juuso's fMobi page.

You'll also find a link there to download fMobi version 1.1.1b. It's available for all Symbian^3 handsets

Are you an fMobi user? How does it stack up against the official Facebook client, or other social networking apps you've tried out? Let us know in the Comments.