I wonder why nobody cannot imagine that a phone could be connected to something besides PC; for instance, a Mac or a micro-sensor system? The latter is of high demand but there is no rs232 pinout information.
You have produced a high-tech part which has extremely limited use -- it cannot be a part of any electronic system. The corporations develop high-tech for the stupid consumers. They kill the natural rs232 by the extra complex USB. You produce the stupid consumers. And call it "progress".