Riley v. California (2014)
The U.S. Supreme Court unanimously ruled that police generally need a warrant to search digital data on a cell phone seized during an arrest. The case involved a smartphone found on a suspect.
The ruling required warrants for most phone searches incident to arrest.
It set a baseline that courts treat phones as uniquely revealing.
The case shows courts recognize phones contain sensitive data, but it left border-search rules for another day.
