https://arstechnica.com/tech-policy/2019/05/lawsuits-att-verizon-t-mobile-sprint-broke-law-by-selling-location-data/

The four major US wireless carriers are facing proposed class-action lawsuits accusing them of violating federal law by selling their customers' real-time location data to third parties.

The complaints seeking class action status and financial damages were filed last week against AT&T, Verizon, T-Mobile, and Sprint in US District Court for the District of Maryland. The four suits, filed on behalf of customers by lawyers from the Z Law firm in Maryland, all begin with text nearly identical to this intro found in the suit against AT&T: