A reddit user has discovered what appears to be a Siri-related bug that allows access to a locked iPhone's Cellular Data options without a passcode.

As shown in the screenshot below, when Siri is asked to bring up Cellular Data settings (or if Cellular Data is on), an option to toggle the feature off appears on the lock screen, with no passcode required. When Siri is specifically asked to turn off Cellular Data, the personal assistant asks for a passcode first.

siricellulardatabug
Given that a passcode is required when asking Siri to disable Cellular Data, it seems that this is meant to be the default behavior and that it's not a setting meant to be controlled from a locked iPhone.

It's questionable if this bug has any real impact, though, as there are other ways to disable cellular service on an iPhone that's been stolen, including turning on Airplane Mode from Control Center or simply turning the iPhone off.

MacRumors tested the Siri command and found that it worked on iOS 9 and all versions of iOS 10, including the most recent iOS 10.3.3 beta.

For iPhone owners worried about unauthorized access to their iPhones, both Siri and the Control Center can be disabled on the lock screen.

Top Rated Comments

jclo Avatar
70 months ago
There is a lock icon circled in green in the first image, and it isn't visible in the second. Seems likely to be a non-issue. The phone was unlocked by Touch ID when Siri was invoked.
I tested it with multiple locked iPhones. It can be disabled without unlocking the iPhone.

Attachment Image
Score: 10 Votes (Like | Disagree)
farewelwilliams Avatar
70 months ago
not a big deal. you could just remove the sim card. or the fact that if it's on AT&T wouldn't make a difference.
Score: 9 Votes (Like | Disagree)
DennisTM Avatar
70 months ago
Or, like the article states you can just turn it on airplane mode via control center... sounds like a "who cares"
I care, because that's exactly why i disabled Control Center on the lockscreen.
Score: 8 Votes (Like | Disagree)
Apple_Robert Avatar
70 months ago
Not working for me. If I ask Siri, it tells that I need to unlock my phone first. I do not get the toggle option on the lock screen.
Score: 6 Votes (Like | Disagree)
jeffrow925 Avatar
70 months ago
Just say to Siri, "Cellular Data" that's all. 2 words.

It's a big deal because people can turn off cell data without the phone owner knowing. Imagine in a emergency trying to use your phone and not having cell data or whatever. It's an issue even if it's not for you. And most people don't easily know to to re-enable the cell data to be on, unlike airplane mode which shows a airplane icon.
Score: 5 Votes (Like | Disagree)
jhrus Avatar
70 months ago
There is a lock icon circled in green in the first image, and it isn't visible in the second. Seems likely to be a non-issue. The phone was unlocked by Touch ID when Siri was invoked.
Score: 5 Votes (Like | Disagree)

Popular Stories

apple watch ultra hammer test

YouTuber Tests Apple Watch Ultra Durability With a Hammer: Table Breaks Before the Watch

Sunday September 25, 2022 2:27 pm PDT by
A YouTuber has put Apple's claims for the durability of the Apple Watch Ultra to the test by putting it up against a drop test, a jar of nails, and repeated hits with a hammer to test the sapphire crystal protecting the display. TechRax, a channel popular for testing the durability of products, first tested the Apple Watch Ultra by dropping it from around four feet high. The Apple Watch...
tim cook spring loaded event

Six Major Products to Expect From Apple in 2023

Sunday September 25, 2022 10:57 am PDT by
As we approach the end of a busy product release season for Apple with only new iPads and Macs left to be announced over the next month or so, we're also setting our sights on 2023. Apple is rumored to have several major products in the pipeline for next year, including new Macs, a new HomePod, a VR/AR headset, and so much more. Other than new iPhones and Apple Watches, which are expected...
Tim Cook Apple Event

Gurman: New iPads and Macs May Be Announced Through Press Releases, No October Event

Sunday September 25, 2022 6:50 am PDT by
Apple may decide to release its remaining products for 2022, which include updated iPad Pro, Mac mini, and 14-inch and 16-inch MacBook Pro models, through press releases on its website rather than a digital event, according to Bloomberg's Mark Gurman. In his latest Power On newsletter, Gurman said that Apple is currently "likely to release its remaining 2022 products via press releases,...
AirPods Max 2022 Colors

Ten Things AirPods Pro 2 Tell Us About AirPods Max 2

Saturday September 24, 2022 1:00 am PDT by
Upon the release of the second-generation AirPods Pro, the AirPods Max became the oldest current-generation AirPods product still in Apple's lineup. Introducing several new features like Adaptive Transparency and the H2 chip, the second-generation AirPods Pro may provide some of the best indications yet of what to expect from the second-generation AirPods Max. Almost two years later, rumors...
iPhone 14 Pro Sports Scores Dynamic Island

iPhone 14 Pro Features Live Sports Scores in Dynamic Island on iOS 16.1

Monday September 26, 2022 7:52 am PDT by
Earlier this month, Apple announced that iOS 16.1 will enable a new Live Activities feature that allows iPhone users to stay on top of things that are happening in real time, such as a sports game or a food delivery order, right from the Lock Screen. On the iPhone 14 Pro and Pro Max, Live Activities also integrate with the Dynamic Island. Premier League match in Dynamic Island via Paul Bradford ...
General iOS 16 Feature Yellow

Some iOS 16 Users Continue to Face Unaddressed Bugs and Battery Drain Two Weeks After Launch

Monday September 26, 2022 7:34 am PDT by
Today marks exactly two weeks since Apple released iOS 16 to the public. Besides the personalized Lock Screen, major changes in Messages, and new features in Maps, the update has also seen its fair share of bugs, performance problems, battery drain, and more. After major iOS updates, it's normal for some users to report having issues with the new update, but such reports usually subside in...
iPhone 14 Pros in Hand Black Background Feature

Verizon iPhone 14 Pro Customers Reporting Cellular Connection Issues

Monday September 26, 2022 6:23 am PDT by
iPhone 14 Pro customers on the Verizon network in the U.S. are reporting issues with slow and unreliable 5G cellular connections and calls randomly dropping. Several threads on Reddit (1,2,3) and the MacRumors forums chronicle issues faced by Verizon customers and Apple's latest iPhone. According to user reports, signal strength on the iPhone 14 Pro is unreliable and weak, while other...
iphone 14 pro max deep purple

iPhone 15 'Ultra' Could Replace Pro Max Model Next Year

Sunday September 25, 2022 7:02 am PDT by
Apple is gearing up to possibly replace its "Pro Max" iPhone with an all-new "Ultra" iPhone 15 model next year, reliable Bloomberg journalist Mark Gurman said today. Writing in his latest Power On newsletter, Gurman said that for the iPhone 15, Apple is planning a revamped design alongside USB-C and a potential name change. Apple could replace its "Pro Max" branding, which it started to use...
apple watch ultra deuglify 1

Apple Watch Ultra User Mods Titanium Casing to 'Deuglify' Design

Tuesday September 27, 2022 8:05 am PDT by
An Apple Watch Ultra user has modified their new device's casing to add a brushed finish and remove the orange color of the Action Button in an effort to make it more visually appealing. The Apple Watch Ultra offers the first complete redesign of the Apple Watch since the product line's announcement in 2014, and while the design has been met with praise from many users, some have criticized...