Verbatim from the interview between Brian Williams and Edward Snowden last night:
Snowden: Any intelligence service in the world that has significant funding and a real technological research team can own that phone [refering to Williams' iPhone] as soon as it connects to a network; it can be theirs.
Williams: Can anyone turn it on remotely if it's off?
Snowden: They can absolutely turn it on with the power turned off on the device.
I concede Snowden's first point, fine. But the last? Does Snowden's last claim, that a powered off mobile device can be remotely turned, have any merit? It seems highly improbable and seemingly impossible.