Probably just buying it from carriers directly. https://techcrunch.com/2019/01/09/us-cell-carriers-still-selling-your-location-data/ https://techcrunch.com/201

Probably just buying it from carriers directly. https://techcrunch.com/2019/01/09/us-cell-carriers-still-selling-your-location-data/ https://techcrunch.com/2019/01/09/us-cell-carriers-still-sel...