nokia 5233 why not have this as supernova

When i saw my colleagues mobile in office .He is listening to FM Radio songs.The music has no proper resonance of sound because it is superimposed sound waves from desk on which he kept mobile.I felt it is better to use Magic box as provided for Nokia supernova which allows user to keep it in that box which make the sound more cleear because the sounds liberate from mobile will not hit desk any more