[redrobot5050]

Yes.

Any briefing involving a secure area will mention that phones can be triggered this way, and that your customer (military, intel, DoD, or DOE) forbids their access for the very reason.

[waqf]

Are such briefings classified, or is there some chance of a citable reference?

[redrobot5050]

I wouldn't be at liberty to comment either way. Talk to your friendly, neighborhood defense contractor.