> 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?”

You can't really turn off most BLE devices with internal batteries, off means low power mode nowadays. Some of them are still discoverable on wireshark when they are 'off'.

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.)

The passenger may not have even known, I've certainly renamed friends' phones as a goof, although not to something that would get them in to trouble.