And if the disaster is an Electromagnetic Pulse?

[Scythe13]

Yes, I get what you're saying LS. Only problems: a sim is still trackable once out of the phone....but costs millions. A phone is trackable without the sim. Best thing is to put the whole lot into a microwave and make it pop.

If it is a national thing, the first thing I'd do is use that system as my sign to bug out. Drop the phone part way, or keep it with me with the battery out, and then just hope they have better people to track than myself.