Found this resource from Apple that details how your data is harvested (more ways than you think), who is making use of it (more players than you think), and why. They provide some ways to limit this if you take the time to learn how the features work on an iPhone. Also, keep in mind that Apple is in competition with the data brokers mentioned. https://www.apple.com/privacy/docs/A_Day_in_the_Life_of_Your_Data.pdf
They have to be real disappointed with me...... On the rare occasion my phone is even charged it sits on the table beside my desk serving as a paper weight that keeps the fan from blowing things around. My phone has left that table area I believe twice in the last 8 years. I will only answer a call if it Mrs T5R (and the phone happens to be charged) and I can count of 3 fingers the number of people I will charge it up and call. So not much to track with my phone.
We say rfid implants are ideal for bushliving, if they find you wounded or death its simple to identify you if you have a implant in your hand. Thats also why we get an rfid implant in 3 weeks, our implant is already ordered, the lest time when we visited the town, now thay gonne program them with our personal number what we have since birth and what is registered by the government. And what is also important for us is the law and the juridical side here. If we get the implant implanted our registration will also changed we lost our first and last name and we gonne deregistered as humans, and we gonne be registered as coyotes so that we changed for the law our race and are officially coyotes we have more privileges for our lifestyle
With my heath problems, I wear a Medic Alert bracelet, with my name, medical condition and name/phone number of my emergency contact. But I won't get chipped! Not worried about being tracked, as I'm disabled and homebound. Anyone "tracking" me is in for some long boring duty. "This old coot hasn't moved fifty feet in four years!"