Hey Mate, As far as I know it's only for the features of the phone, Whether it's camera or video camera...Now there are videos out there, On YouTube for example that can be played in 3D on your phone.
I'm relatively new with the phone, As I got it last week, So I'm still trying to figure it out myself.
I do have a question for you as well. Is your 2D/3D Toggle, Camera button loose a bit....Like they jiggle around in there a little?