A newly reported iPhone phenomenon could be bad news for both cops and robbers

Best iPhone VPN
Håll dig säker när du surfar online på din iPhone eller iPad - här är de bästa VPN-tjänsterna för iPhone. (Image credit: Shutterstock / Neirfy)

A new phenomenon is reportedly causing confiscated iPhones to reboot on their own and send signals to nearby handsets to do the same – and we don’t know yet if it’s a bug or an intentional feature.

According to a report by 404 Media, law enforcement officers in the US have noticed and warned of an issue whereby iPhones reboot by themselves, in turn becoming much harder to unlock without the original user’s input.

The report says that some officers based in Detroit have hypothesized that the rebooting could stem from a new security feature added in iOS 18, though this is purely conjecture.

The iPhones documented appear to reboot a day or so after being disconnected from cellular service, or after a day of inactivity.

The crux of the issue is how iPhones handle security and unlocking, as there are two main states that an iPhone can occupy when it comes to day-to-day security.

The first is known as Before First Unlock (BFU), which offers much less information and requires a passcode to disengage. 

The second is After First Unlock (AFU), which displays more information on the lock screen, can be disabled with biometrics like Face ID, and, as this report implies, is easier for law enforcement to break into if necessary.

Rebooting an iPhone returns it to the BFU stage, making it substantially harder to access by force.

iPhone lock screen on orange background

An iPhone in the AFU state (Image credit: Future)

  • US law enforcement officials are reporting that confiscated iPhones are rebooting automatically
  • This makes the phones harder to access, and may be a security feature or bug
  • Apple has not commented on the situation

What’s more, the report seemingly claims that the rebooted iPhones send wireless signals to nearby handsets that are still in the AFU state to trigger a reboot, though the technical specifics of how this would work aren’t exactly clear yet.

Apple is well-known for its strict approach to user privacy, and has continually refused to allow the FBI to create a backdoor into the iPhone. And as much as this new rebooting phenomenon may hinder law enforcement, it tracks that criminals and thieves would find it harder to unlock stolen phones, too.

However, as Android Authority notes, this report is down to the interpretations of law enforcement officers, and iOS 18 already has a small list of known rebooting glitches. It could be that the reporting officers have simply misunderstood a glitch affecting multiple confiscated iPhone handsets.

Apple has yet to comment on this issue, so be sure to check in with our iPhone coverage for the latest official updates.

You might also like

Jamie Richards
Mobile Computing Staff Writer

Jamie is a Mobile Computing Staff Writer for TechRadar, responsible for covering phones and tablets. He’s been tech-obsessed from a young age and has written for various news and culture publications. Jamie graduated from Goldsmiths, University of London in 2024 with a bachelor’s degree in Journalism. Since starting out as a music blogger in 2020, he’s worked on local news stories, finance trade magazines, and multimedia political features. He brings a love for digital journalism and consumer technology to TechRadar. Outside of the TechRadar office, Jamie can be found binge-watching tech reviews, DJing in local venues around London, or challenging friends to a game of Super Smash Bros. Ultimate.

Read more
iPhone 16 Pro Max with Apple Intelligence
Did you turn off Apple Intelligence? Updating to iOS 18.3.1 or macOS 15.3.1 might’ve turned it on again
An iPhone with a 10:30am alarm ringing next to an Apple Watch that displays the time as 12:42pm
Apple warns "extremely sophisticated attack" hits iPhones and iPads, so update now
iPhone alarm interface
Apple seems to be hitting snooze on this year-long iPhone alarm issue
Apple Intelligence logo on an iPhone.
Apple's next iOS and macOS update will turn on Apple Intelligence if your iPhone or Mac can run it
An iPhone running iOS 18 on a purple and blue background
iOS 18.4 could launch soon with a major upgrade to your iPhone’s notifications
Summarize Previews settings on an iPhone 16.
No more fake news - Apple Intelligence Notification summaries temporarily disabled for news apps in iOS 18.3
Latest in iPhone
The iPhone 16 Pro on a grey background
iPhone 17 Pro tipped to get 8K video recording – but I want these 3 video features instead
Apple iPhone 16 Pro REVIEW
The iPhone 17 Air looks impressively slim in this new comparison image, but that just makes me more worried about the specs
iPhone 16 Pro Desert Titanium in hand
I think the rumored iPhone 17 Pro redesign looks great – but is it Apple enough?
Apple iPhone 16 Review
New iPhone 17 report lends weight to rumors of major display and camera upgrades, and a pricey Apple foldable
Apple iPhone 16 Review
The latest iPhone 18 leak hints at a major chipset upgrade for all four models
Google Pixel 9 Pro Fold main display opened
Apple is rumored to be prioritizing battery life on the foldable iPhone – which could also feature a liquid metal hinge for added durability
Latest in News
Buzz Lightyear Space Ranger Spin Rennovations
Disney’s giving a classic Buzz Lightyear ride a tech overhaul – here's everything you need to know
Hisense U8 series TV on wall in living room
Hisense announces 2025 mini-LED TV lineup, with screen sizes up to 100 inches – and a surprising smart TV switch
Nintendo Music teaser art
Nintendo Music expands its library with songs from Kirby and the Forgotten Land and Tetris
Opera AI Tabs
Opera's new AI feature brings order to your browser tab chaos
An image of Pro-Ject's Flatten it closed and opened
Pro-Ject’s new vinyl flattener will fix any warped LPs you inadvertently buy on Record Store Day
The iPhone 16 Pro on a grey background
iPhone 17 Pro tipped to get 8K video recording – but I want these 3 video features instead