Nadine came down harsh on the guy.
multiband antennas exist
https://www.digikey.com/en/articles/how-to-use-multiband-embedded-antennas-to-save-iot-designs
programmable gate arrays exist in phones and other hardware.
https://www.fpgakey.com/technology/details/iphone7-joins-fpga-chip-for-the-first-time
weve already seen them mapping a room with wifi, so the only remaining requirement to do damage is the power supply, so it may inly be able to do damage while plugged in.