> This advice is wrong. Try turning off an older feature phone's regular operating system, and then plugging it in to charge. Many of them will immediately come alive with a "charging" indicator on the screen, even when supposedly powered off. This pre-boot mode is perfectly capable of turning on the mic and recording what's going on.
Smartphones do the same thing. But that's triggered by a hardware interrupt (you physically connecting power to an input). You CAN NOT do that remotely, as there must be power on the receiver to receive the signal in the first place.
Or here, let's simplify it. Power off your cell phone, then have someone call it. Does it ring? No, of course it doesn't. Your argument is that by changing the caller from your friend to the NSA that somehow the phone would now be able to react to that signal. Which is utterly idiotic.
Smartphones do the same thing. But that's triggered by a hardware interrupt (you physically connecting power to an input). You CAN NOT do that remotely, as there must be power on the receiver to receive the signal in the first place.
Or here, let's simplify it. Power off your cell phone, then have someone call it. Does it ring? No, of course it doesn't. Your argument is that by changing the caller from your friend to the NSA that somehow the phone would now be able to react to that signal. Which is utterly idiotic.