The Court ruled that allowing law enforcement access to such data would be a privacy intrusion. The Court decided that there was no valid reason to allow a search of cell phone data merely due to the arrest of a suspect.
This is a major ruling by the United States Supreme Court which sets out a bright line rule. The Court's opinion may be found here: http://www.supremecourt.gov/opinions/13pdf/13-132_8l9c.pdf
Lori G. Levin
Attorney at Law
180 N. LaSalle, Suite 3700
Chicago, IL 60601