That's interesting! As far as improvised faraday cages go, I always heard that microwave ovens are a good solution. Does this mean that microwave ovens wouldn't be any better as they would only block the specific microwave frequency they're designed for?
Correct. In fact, you can easily verify this by putting a phone in an unpowered microwave and calling it. It'll usually get both 4G (frequencies range, but 800Mhz in my area) and Wifi (over 5GHz).
