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EM waves can hit the antenna on a phone much like pushing a child on a swing, higher and higher.

A capacitor and inductor tank circuit acts the same way. With enough energy store (very little needed) it can transmit the phone ID with no battery present.

So the only way to not be tracked is with a Faraday cage. Fully enclose a device in aluminum or other conducting material. There are Faraday phone pouches etc.

We've seen there's no level of power abuse corporations etc. won't stoop to.

A prepaid burner phone can be used so long as it is never used near any other devices, such as cars etc.