Which is stupid because of how obviously wrong it is. Batteries that can sustain the cell radio, CPU, and audio DSP are not small and easily concealed, and more importantly tear downs of phones happen all the time and no such reserve power is ever found.
Sure, but those greeting cards typically don't have quad core CPUs in them, either.
You'd have to expand the claim to not only include hidden reserve power, but also hidden reserve memory, CPU, and audio system. Not to mention somehow convincing phone OEMs to actually spend the money adding this system to their motherboards and building it - there's no way in hell you are randomly sneaking that in at the factory without the OEMs knowledge. So now you also have to somehow keep the OEMs quiet about it.
Oh I totally agree that they're not doing it - it falls at the fact that as much power as the NSA has in America, there's no way they're convincing Korean and Japanese phone manufacturers to add a single penny to their BOM. I was just refuting the idea that it would be impossible to do.
