Not sure what you like to hear but of course it is being use for calling, like a phone, as mobile internet device for surfing new sites, communication with overseas destinations over Skype / SIP, Navigation with Here for Android, as a camera and to play one native Sailfish game.

Installed this facebook account under Sailfish out of curiousity but finally the facebook beast seemed to be easier to control via the mobile web site.

Mobile browser of choice: Firefox for Android.