You really want a lection on radiowaves, programming, electronics and other stuff here?

OK, it is not very complex.

Radiowaves is pushed out from any conducting body. Human body is highly conductive, because of salts in body liquids. Higher the frequency, lower penetration, Faradey cage uses that to isolate internals from outside radiowaves. It named skin-effect. Cellular communications have very high frequences so they could not get into the human body to interact with presumable chips. To penetrate a glass of water in microwave owen you have to feed a hundreds of watts into the glass from magnetron. So, even if some evil bastard will try to radiate you enough to access the chips inside you, you will be fried earlier than the chips will be accessed. And you are much larger than a glass of water, so that bastard have to push kilowatts of RF into your body that will completely take away any sense of having chips inside you.

AI does not exist. It is a marketing bullshit - to pose simple neural networks (that have hoting common with anything neural and any networks, it is just a systems of equations with adjustable weight coefficients) as AI. NN have absolutely no any intelligence, it is stupid algorithms that do what they was trained to. NN in no case could be even a some step to AI, because they have nothing common with intelligence. NN also need a decent computing power to do any reasonable work.

Nanochips is everywhere now, in any electronic device you have. They are chips and they have nanometer sized elements. Nearly all chips is "nano", except some power circuits where elements have to be large to sustain large currents. All that "nano" crap is also marketing bullshit. And all that nanochips needs power. They can't work without current flow. Required power grow with the count of logic cells in chip. Even simpliest MCUs have tens of thousands logic cells. And communication from inside faradey cage of human body will need a lot more power. Your vaccine nanochips will need a lot of full-size batteries that hardly make them run a day and it will be very problematic to find a cavity in human body where they all will fit.

That is why all that 5G AI nanochip crap is bullshit.