Gravity is the social networking client for your Symbian smartphone. Established in early 2009 and continually updated for you.
Gravity supports all your favorite services like Twitter, Facebook, Foursquare, Google Reader and many, many more.
And finally, you can use App.net with Gravity as well. Yay!
Features supported so far:
View your stream, your mentions, favorites, friends and followers. Fetch threads or search for #hashtags. Check out new users from the global stream and follow them - if you like. Preview images posted to App.net.