Today the U.S. Supreme Court unanimously held that police generally may not, without a warrant, search digital information on a cell phone seized from an individual who has been arrested.
http://www.nytimes.com/2014/06/26/us/supreme-court-cellphones-search-privacy.html?_r=1
Read the opinion here: http://www.supremecourt.gov/opinions/13pdf/13-132_8l9c.pdf
