> When police apprehended some members of the ring, the smaller fish implicated the leader of the ring, Timothy Carpenter. Police got a court order to get access to 127 days of cellphone tracking records for Carpenter and other members of the gang.

> Lo and behold, Carpenter's general location information matched the robbery locations, and that information was used to help convict him. Carpenter appealed his conviction to the Supreme Court, contending that the Constitution required that police first obtain a warrant before getting this location information from a service provider.

This paragraph makes it seem like the govt must get a warrant before it can ask the service provider for that information.