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Riley v. California

573 U.S. 373 (2014)

Federal & State Law Editorial TeamLast reviewed: July 2026

Opinion Summary

Unanimously held that police generally need a warrant to search the digital contents of a cell phone seized during an arrest. Chief Justice Roberts wrote that modern cell phones are 'such a pervasive and insistent part of daily life that the proverbial visitor from Mars might conclude they were an important feature of human anatomy.' Distinguished cell phones from other items that may be searched incident to arrest.

About this case

Riley v. California

Riley v. California, 573 U.S. 373 (2014),[1] is a landmark United States Supreme Court case in which the court ruled that the warrantless search and seizure of the digital contents of a cell phone during an arrest is unconstitutional under the Fourth Amendment .[2] [3]

The case arose from inconsistent rulings on cell phone searches from various state and federal courts. The Fourth , Fifth , and Seventh Circuits had ruled that police officers can search cell phones incident to arrest under various standards. That rule was also accepted by the state supreme courts of Georgia , Massachusetts , and California . On the other hand, the First Circuit and the state supreme courts of Florida and Ohio disagreed and ruled that police needed a warrant to search the information on a suspect's phone.[3] California had also proposed a state statute requiring police to obtain a warrant before searching the contents of "portable electronic devices".[4]

The U.S. Supreme Court took the Riley case in order to address these inconsistencies at the lower courts.[5] Riley has been widely praised as “a sweeping victory for privacy rights”[6] with legal scholars describing the decision as "the privacy gift that keeps on giving."[7]

Contents

Background

(https://en.wikipedia.org/w/index.php?title=Riley_v._California&action=edit&section=1 "Edit section: Background")

Supreme Court precedent

(https://en.wikipedia.org/w/index.php?title=Riley_v._California&action=edit&section=2 "Edit section: Supreme Court precedent")

In _Chimel v. California _ (1969), the Supreme Court ruled that if the police arrest someone, they may search the body of the person without a warrant and "the area into which he might reach" in order to protect material evidence or for the officers' safety.[8] That ruling served as confirmation of the notion that police may search a suspect, and the area immediately surrounding that person, without a warrant during a lawful arrest in accordance with the search incident to arrest doctrine.[9]

Before the Riley case, the Supreme Court had explored variations on the Chimel theme, considering police searches of various items individuals had close at hand when arrested, and the court was prepared to look into the seizure of cell phones when incident to arrest. Lower courts were in dispute on whether the Fourth Amendment allows the police to search the digital contents of such a phone, without first getting a warrant.[10]

Stanford University law professor Jeffrey L. Fisher , who represented Riley in court, explaining in a media interview that at least six courts held that the Fourth Amendment permits searches of this type, but that three courts did not. Therefore, a definitive Supreme Court precedent was needed.[5] Fisher opined that there are "very, very profound problems with searching a smartphone without a warrant" and that it was like giving "police officers authority to search through the private papers and the drawers and bureaus and cabinets of somebody's house." Fisher warned that it could open up "every American's entire life to the police department, not just at the scene but later at the station house and downloaded into their computer forever".[11]

Arrest of David Leon Riley

(https://en.wikipedia.org/w/index.php?title=Riley_v._California&action=edit&section=3 "Edit section: Arrest of David Leon Riley")

David Leon Riley was pulled over in San Diego, California in 2009 for expired registration tags on his vehicle. The police officer then found that Riley was driving with a suspended driver's license. The San Diego Police Department 's policy at the time was to impound a vehicle after stopping a driver with a suspended license in order to prevent them from driving again. Additionally, department policy required officers to perform an inventory search of the vehicle, which in Riley's case led to the discovery of two handguns under the hood of his vehicle.[1]

Later ballistic testing confirmed that the handguns were the weapons used in a gangland murder that had taken place a few weeks previously, for which Riley had been a suspect. Because of the discovery of the concealed and loaded handguns, along with gang paraphernalia, during the vehicle search, police placed Riley under arrest and searched his cell phone without a warrant.[1]

The cell phone search yielded information indicating that Riley was a member of the Lincoln Park gang; evidence included pictures, cell phone contacts, text messages, and video clips. Included in the photos was a picture of a different vehicle that Riley owned, which was also the vehicle involved in the gang shooting. Based in part on the pictures and videos recovered from the cell phone, police charged Riley in connection with the gang shooting.[1]

Riley moved to suppress the cell phone evidence at his criminal trial, but the judge permitted the evidence to be included. Ultimately, Riley was convicted and the California Court of Appeal affirmed the verdict. That court ruled that the search incident to arrest doctrine permits police to conduct a full exploratory search of a cell phone (even if the search is conducted later and at a different location) whenever the phone is found near the suspect at the time of arrest.[12] Riley then appealed that ruling to the U.S. Supreme Court.

Arrest of Brima Wurie

(https://en.wikipedia.org/w/index.php?title=Riley_v._California&action=edit&section=4 "Edit section: Arrest of Brima Wurie")

Brima Wurie was arrested in Boston, Massachusetts in 2007 after police observed him participating in an apparent drug sale. Officers seized two cell phones from Wurie's person, and noticed that one of them was receiving multiple calls from a source identified as “my house” on the phone's screen. The officers opened the phone, accessed its call log, determined the number associated with the “my house” label, and traced that number to what they suspected was Wurie's apartment. They then secured a search warrant for Wurie's apartment and, during the ensuing search, found crack cocaine, marijuana, drug paraphernalia, a firearm, ammunition, and cash.[1]

Wurie was subsequently charged with drug and firearm offenses and placed on trial. He moved to suppress the evidence obtained from the search of his apartment, but the trial court denied the motion and Wurie was convicted. Wurie appealed to the [First Circuit Court of Appeals](https://en.wikipedia.org/wiki/United_States_Court_of_A

Editorial context from Wikipedia (CC-BY-SA 4.0).

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Case Information

Court
Supreme Court of the United States
Court Level
Supreme Court of the United States
Date Decided
Wednesday, June 25, 2014
Citation
573 U.S. 373 (2014)
Jurisdiction
United States Federal

Legal Topics

criminalcivil rights

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.