Roving bugs allows someone to listen to the microphone of the device, even if it is turned off. I believe this does not operate in Airplane mode. Roving bugs are built into the iPhone itself, I'm unsure if it is in the OS or if it is in the baseband. They're supposed to be for law enforcement, but it's also possible for telcos to use them, like in my case. If it is in the OS, how do I disable it?