United States judge rules that FBI is not allowed to look at locked phone screen without warrant

In a ruling by judge John Coughenour at the district court of Seattle, the judge has decided that the FBI violated the 4th Amendment by powering the phone of the suspect on and taking a photograph of the lock screen. While powering the phone on and looking at the phone during the search is permitted, the judge ruled that taking a photograph and examining it later requires a warrant.