I stopped to use smartphones in 2018. Since then I have a Nokia 3310 new model, with Facebook installed. However the wi-fi is turned on around 10 minutes per month, in best case. What I've immediately observed after switching to the new phone that I'm receiving more precisely targeted ads. Before, on smartphone no adds were relevant, after the smartphone new adds were all relevant. My guess was the phone / the cellul…
Tracking is how cell phones and cell basestations work. You cannot have one without the other. The better the clocks in the base stations the better the multilateration accuracy. It's already well under As for listening to you to provide context for what ads to show, I find that supremely unlikely. Probably other aspects of your digital life are also monitored to inform this kind of thing.