Supreme Court Rules Police Need Warrants to Obtain a User's Smartphone Location Data - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Supreme Court Rules Police Need Warrants to Obtain a User's Smartphone Location Data

The United States Supreme Court today ruled that the government "is required" to obtain a warrant if it wants to gain access to data found on a civilian's smartphone, but only when it's related to the user's location data (via The New York Times).

United States Supreme Court Building


The decision is expected to have major implications for digital privacy moving forward as it pertains to legal cases, and could cause ripples in unlawful search and seizure cases that involve personal information held by companies like emails, texts, internet searches, bank records, and more.

In a major statement on privacy in the digital age, the Supreme Court ruled on Friday that the government generally needs a warrant to collect troves of location data about the customers of cellphone companies.

But Chief Justice John G. Roberts Jr., writing for the majority, said the decision was limited. “We hold only that a warrant is required in the rare case where the suspect has a legitimate privacy interest in records held by a third party,” the chief justice wrote. The court’s four more liberal justices joined his opinion.

Today's vote in the case Carpenter v. United States came down to a 5-4 ruling, and originally emerged from armed robberies of Radio Shacks and other stores in Detroit dating back to 2010.

In the case, prosecutors relied on "months of records" obtained from smartphone makers to help prove their case, ultimately showing communication between Timothy Ivory Carpenter outside of a robbery location -- with his smartphone nearby -- and his accomplices inside of the location. The companies reportedly turned over 127 days' worth of Carpenter's records, with information as specific as whether or not he slept at home on any given night or if he went to church on Sunday mornings.

This led to the question by the Supreme Court justices as to whether the prosecutors violated the Fourth Amendment in discovering so much data on Carpenter's movements. Now, police will have to receive a warrant issued by the court in order to obtain any smartphone data as it relates to the owner's location data.

As the case continued, Apple and other technology companies filed a brief in August 2017 arguing against "rigid analog-era" Fourth Amendment rules. The brief deliberately stayed neutral on the topic of choosing sides, but urged the Supreme Court to continue bringing the Fourth Amendment law into the modern era. The companies stated that customers should not be "forced to relinquish Fourth Amendment protections" against intrusion by the government, simply because they choose to use modern technology.

Note: Due to the political nature of the discussion regarding this topic, the discussion thread is located in our Politics, Religion, Social Issues forum. All forum members and site visitors are welcome to read and follow the thread, but posting is limited to forum members with at least 100 posts.

Popular Stories

imac video apple feature

Apple Released Yet Another New Product Today

Friday March 20, 2026 2:39 pm PDT by
Apple has unveiled a whopping nine new products so far this March, including an iPhone 17e, iPad Air models with the M4 chip, MacBook Air models with the M5 chip, MacBook Pro models with M5 Pro and M5 Max chips, the all-new MacBook Neo, an updated Studio Display, a higher-end Studio Display XDR, AirPods Max 2, and now the Nike Powerbeats Pro 2. iPhone 17e features the same overall design as...
iPhone 18 Pro Deep Red Feature

iPhone 18 Pro Launching Later This Year With These 12 New Features

Wednesday March 18, 2026 7:39 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another six months or so, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component...
ios 26 4 pastel

iOS 26.4: Top 10 New Features Coming to Your iPhone

Friday March 20, 2026 2:44 pm PDT by
iOS 26.4 isn't the major update with new Siri features that we hoped for, but there are some useful quality of life improvements, and a little bit of fun with an AI playlist generator and new emoji characters. Playlist Playground - Apple Music has a Playlist Playground option that lets you generate playlists from text-based descriptions. You can include moods, feelings, activities, or...

Top Rated Comments

101 months ago
I'm shocked this isn't a 9-0 slam dunk with a poster for it... how can we be so vocal about the 2nd Amendment, or the 1st... and not be equally as loud for the 4th? "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated"........... come on now.
Score: 34 Votes (Like | Disagree)
slimtastic Avatar
101 months ago
From the start, this should have ALWAYS required a warrant.
Score: 20 Votes (Like | Disagree)
101 months ago
Another 'liberal' case where Roberts sided for.

The Court could soon take a liberal turn if Roberts continues on his current trajectory, unless a liberal justice retires during Trump's presidency.
How is this a liberal decision? Generally curious.
Score: 17 Votes (Like | Disagree)
101 months ago
I wonder how long before Apple offers the ability to delete your location data, using a method similar to how you can clear your browser history.
Score: 14 Votes (Like | Disagree)
ssgbryan Avatar
101 months ago
Because conservatives really don’t democracy.
Score: 11 Votes (Like | Disagree)
izyreal Avatar
101 months ago
Another 'liberal' case where Roberts sided for.

The Court could soon take a liberal turn if Roberts continues on his current trajectory, unless a liberal justice retires during Trump's presidency.
I disagree with your proposition that this was a liberal decision. As a fairly conservative guy, I believe that the decision represented a clear victory for the 4th amendment. I do not think that the supreme court can or should make decisions that conflict with the constitution. If you don't like what the constitution says, there is a process to amend it.

IMHO, the 4th amendment is black and white clear in this case:
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."

My phone is one of my "effects" that is constitutionally protected. The data within my phone (or that is generated by use of my phone) is also protected as it is an integral part of my effect (my phone).
Score: 8 Votes (Like | Disagree)
Related Apple News: Politics | News | Mac | Reviews | Iphone