In North Carolina, where the State Court of Appeals relied on Third Party Doctrine, the answer is no.
The Free Press reports:
Should you be suspected of a crime, the state Court of Appeals – in an opinion released Tuesday – ruled law enforcement can discover where you are through your mobile phone location without needing to obtain a search warrant.
Indeed, according to the court, obtaining such information isn’t construed as a search.
Read more on Government Technology.
h/t, FourthAmendment.com