I wonder... Is there a way to overwhelm them with useless junk data?

I'm just thinking out loud, but maybe send my own phone a bunch of fake GPS signals, say, within my own house? Or maybe, somehow 'trade signals' with someone else in a way that collecting the data is useless? Or store my phone in. Faraday cage when I'm not specifically using it? Im sure other people who know the specifics better than I do will flesh it out better that I have, but maybe this will get the ball rolling...