“Sounds like an opportunity for a smart company to make an untrackable tablet, laptop, or cell and make a ton of money.”
This should do it as long as you are not using the phone. I don’t believe there’s any possible way to avoid tracking if the phone is capable of making or receiving calls.
http://silent-pocket.com/collections/full-rf-shielding
It's called TURNING THE DAMN' THING OFF.
I am always a day late and a dollar short.