"Storing location data in violation of a user's preferences is wrong, said Jonathan Mayer, a Princeton computer scientist and former chief technologist for the Federal Communications Commission's enforcement bureau. A researcher from Mayer's lab confirmed the AP's findings on multiple Android devices; the AP conducted its own tests on several iPhones that found the same behavior.
"If you're going to allow users to turn off something called 'Location History,' then all the places where you maintain location history should be turned off," Mayer said. "That seems like a pretty straightforward position to have.""