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

iphone 17 models

No iPhone 18 Launch This Year, Reports Suggest

Thursday January 1, 2026 8:43 am PST by
Apple is not expected to release a standard iPhone 18 model this year, according to a growing number of reports that suggest the company is planning a significant change to its long-standing annual iPhone launch cycle. Despite the immense success of the iPhone 17 in 2025, the iPhone 18 is not expected to arrive until the spring of 2027, leaving the iPhone 17 in the lineup as the latest...
apple intelligence black

Report: Apple's AI Strategy Could Finally Pay Off in 2026

Tuesday December 30, 2025 9:01 am PST by
Apple's restrained artificial intelligence strategy may pay off in 2026 amid the arrival of a revamped Siri and concerns around the AI market "bubble" bursting, The Information argues. The speculative report notes that Apple has taken a restrained approach with AI innovations compared with peers such as OpenAI, Google, and Meta, which are investing hundreds of billions of dollars in data...
apple fitness 2026 1

Apple Teases 'Something Big' Coming Soon to Apple Fitness+

Tuesday December 30, 2025 2:11 pm PST by
The Apple Fitness+ Instagram account today teased that the service has "big plans" for 2026. In a video, several Apple Fitness+ trainers are shown holding up newspapers with headlines related to Apple Fitness+. What's Apple Fitness+ Planning for the New Year? Something Big is Coming to Apple Fitness+ The Countdown Begins. Apple Fitness+ 2026 is Almost Here 2026 Plans Still Under ...
iphone 17 pro dark blue 1

iPhone 17 Pro and Pro Max Users Report Static Speaker Noise While Charging

Tuesday December 30, 2025 10:39 am PST by
iPhone 17 Pro and Pro Max owners are having trouble with the speakers of their devices, and have complained about a static or hissing noise that occurs when the iPhone is charging. There are multiple discussions about the issue on Reddit, the MacRumors forums, and Apple's Support Community, where affected users say there is a noticeable static noise "like an old radio." Some people report...
maxresdefault

Hands-On With a Rough iPhone Fold Mockup

Monday December 29, 2025 10:55 am PST by
Apple is rumored to be introducing a foldable iPhone in September 2026, and since it will bring the biggest form factor change since the iPhone was introduced in 2007, curiosity about the design is high. A 3D designer created an iPhone Fold design based on rumors, and we printed it out to see how it compares to Apple's current iPhones. Subscribe to the MacRumors YouTube channel for more ...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
Mac Pro Feature Blue

What's Happening With the Mac Pro?

Wednesday December 31, 2025 9:59 am PST by
Apple hasn't updated the Mac Pro since 2023, and according to recent rumors, there's no update coming in the near future. In fact, Apple might be finished with the Mac Pro. Bloomberg recently said that the Mac Pro is "on the back burner" and has been "largely written off" by Apple. Apple apparently views the more compact Mac Studio as the ideal high-end pro-level desktop, and it has almost...
macbook air march 2020

Apple Says Final Intel MacBook Air and Apple Watch Series 5 Now 'Vintage'

Wednesday December 31, 2025 8:39 am PST by
Apple today added the final 13-inch MacBook Air powered by Intel processors, the Apple Watch Series 5, and additional products to its vintage products list. The iPhone 11 Pro was also added to the list after the iPhone 11 Pro Max was added back in September. The full list of products added to Apple's vintage and obsolete list today: MacBook Air (Retina, 13-inch, 2020) iPhone 8 Plus 128GB ...

Top Rated Comments

BuffaloTF Avatar
98 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
98 months ago
From the start, this should have ALWAYS required a warrant.
Score: 20 Votes (Like | Disagree)
MaxxTraxx Avatar
98 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)
goonie4life9 Avatar
98 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
98 months ago
Because conservatives really don’t democracy.
Score: 11 Votes (Like | Disagree)
827538 Avatar
98 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.
What are you smoking?

This is something any person be it on the right or left of the political spectrum supports.

My extremely conservative Texan Christian wife is all for this. As I imagine so are most liberals. Not every issue is polarised. In fact if you stop swallowing party dogma and apply logic and common sense you would find most sides have a lot in common, they perhaps just see things being implemented in a different way.

No sane person wants the government to be allowed to invade their privacy without due cause, no one.
Score: 8 Votes (Like | Disagree)