On Monday April 15, 2019, Engadget wrote:
Law enforcement is requesting mobile location history at unprecedented levels, but it's not clear that police need everything they get.
Google anonymizes the data at first, but it will provide names and other sensitive info if police believe it matches the behavior of a suspect or witness.
However, people don't necessarily realize that Google keeps the info for an indefinite period, or that the history is detailed enough to provide a picture of street-by-street movements to investigators.
More significantly, there are legal and technical concerns to law enforcement's increasing dependence on Location History.It's not very useful for iPhone owners, either, since only some use Google Maps and are less likely to have it running in any capacity.