I suspect there might be on-board antennas in addition to offboard antennas. I had a device with wifi, and I figured I could disable the wifi by just disconnec

I suspect there might be on-board antennas in addition to offboard antennas. I had a device with wifi, and I figured I could disable the wifi by just disconnecting the antenna. Nope. Then I connected the antenna to a dummy load Nope. there are onboard antennas that take over and continue to work. I suspect the same thing for cellular (though I have no actual data about the system in question)