Hi,
Actually, the PIOs of the Bluetooth Bee are could not controlled by the user excepting the PIO0, PIO1, PIO10 and PIO11 of which the function is described on the datasheet.
The profile of the Buletooth Bee is SPP, so you can just communicate between your smartphone and the Bee through an serial tool running on the smartphone.
Sorry for the inaccurate info the datasheet brought. Please feel free to ask any question.
Regards,
-Icing