stage phoning
n.— «Take “stage phoning”, for instance, the term sociologists use for the show we put on when we are being observed or overheard talking on our mobile. “Like a cubist painting, the speaker on the mobile phone is seen from two perspectives,” observes Hans Geser in his study, Towards a Sociological Theory of the Mobile Phone.» —“Never Alone” The Age (Australia) May 15, 2004. (source: Double-Tongued Dictionary)