<P> In the United States, there is a limited constitutional guarantee on the privacy of telecommunications through the Fourth Amendment . The use of location data is further limited by statutory, administrative, and case law . Police access of seven days of a citizen's location data is unquestionably enough to be a fourth amendment search requiring both probable cause and a warrant . </P> <P> In November 2017, the United States Supreme Court ruled in Carpenter v. United States that the government violates the Fourth Amendment by accessing historical records containing the physical locations of cellphones without a search warrant . </P>

Where is the antenna located in a cell phone