Turning it off would have solved the bureaucratic problem for flight crew. Sadly, the passengers (collectively) failed to accomplish this basic task.
It could've been in checked luggage and turned itself on from the movement. No way for the passengers to get to it. Unfortunately it didn't turn itself off (although if it did, and then later turned on again, that would've been even worse.)
> Turning it off would have solved the bureaucratic problem
The article says two Bluetooth radios weren’t turned off. Do we know if one of those was “the bomb?”