Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_1_3 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7E18 Safari/528.16)

The planes with LiveTV have no controls for the crew other than on, off, free, play safety video, and play promo video (which is still being added to the fleet). Furthermore, on planes that do have volume controls, it only applies to the audio from the tape, and not the crew's PA announcements.