I'm asking those who know better than I. Wouldn't the cell phone battery die in flight? I mean, mine goes from fully charged to dead in about 2 hours of searching for a signal. Also, if you set it to not search for a signal (airplane mode), then it won't be able to be set off by a phone call.
Would the motivation be to crash the aircraft on, or shortly after take-off, or detonate the packages en-route on the ground (while in the truck or at the intended destination for max effect)?
“Test run to see if the device could be detonated in the cargo hold by cell phone from the ground?’
They don’t need to detonate it from the ground or on a cargo plane when they’ve got so many willing suicide bombers who are willing to do the same thing on a passenger plane (i.e. the underwear bomber...)