RF-Hacking Target Ahoy

Sprint releases a new mobile phone called the “Fusic.” Wouldn’t otherwise be noteworthy except this is the first mobile phone able to both transmit and receive signals on the FM dial.
Is the transmitter frequency-agile? How much power does it run? Can it be modified? (This review says it broadcasts in stereo with a range of “up to 10 feet.”)
Could a group of Fusic-armed people with phones synchronized to a single frequency effectively saturate a given area?