Quote Quoting Supreme Court limits police searches of cellphones
Cellphones and smartphones generally cannot be searched by police without a warrant during arrests, the Supreme Court ruled unanimously Wednesday in a major clash between privacy and technology....

The court struck down an extensive smartphone search in California that had been upheld by the state Court of Appeals, as well as a more limited probe of an old flip-top cellphone in Massachusetts that a federal judge already had thrown out.

The result was a ruling that police cannot seek what they believe is relevant to the crime without getting a warrant....

The justices noted that vast amounts of sensitive data on modern smartphones raise new privacy concerns that differentiate them from other evidence. They reserved for police the right to claim "exigent circumstances."
The opinion.