Sometimes—but not reliably for every iPhone. Whether forensic tools can access data from a locked iPhone depends on its model, iOS version, security state, passcode protections, and the tool’s supported methods. A locked screen alone does not show whether the phone has rebooted since it was last unlocked.
Can police unlock a locked iPhone?
There is no defensible yes-or-no answer that applies to every iPhone. Some forensic tools are reported to access data from some locked devices in some circumstances. Public claims do not establish that a tool can unlock every model, iOS release, or category of data.
Apple says data protection is enabled automatically when a user sets an active passcode. That protection encrypts files on the device. The relevant question is not only whether the screen is locked, but also what security state the phone is in and which data a particular method supports. [Apple Developer Documentation]
Why an iPhone’s state matters
Apple distinguishes between data protection states before and after the first successful unlock following startup. For files protected by the default “Complete until first user authentication” class, Apple says the files remain inaccessible until that first unlock; after it, they remain accessible until shutdown or reboot. This does not mean all data is accessible to a forensic tool in either state.
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| State | What it means | Why it matters |
|---|---|---|
| Before First Unlock (BFU) | The iPhone has started or restarted but has not yet been unlocked successfully. | It is more restrictive: protected files may remain unavailable because the first unlock has not occurred. |
| After First Unlock (AFU) | The iPhone has been unlocked at least once since startup and has not restarted since. | Some protected files can remain available to the operating system until shutdown or reboot; that is not proof that a particular tool can extract them. |
A phone can show a locked screen in either state. The screen does not reveal whether it has rebooted since the last successful unlock.
What can happen after a reboot?
A reboot moves an iPhone from AFU to BFU. Apple’s Platform Security guide says that on iOS 18.1 or later, Automatic Restart can restart a device after a prolonged locked period, moving it to BFU and purging sensitive security keys and transient data from memory. The cited Apple passage does not specify an exact number of hours. [Apple Platform Security]
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Virginia’s Department of Forensic Science described an applicable powered-on iPhone restarting after 72 hours since it was last locked. That figure is from the agency’s February 20, 2025 notice; it should not be treated as a universal timing for every iPhone configuration. The agency warned that iOS 18 security enhancements can impede access to data on compatible phones. [Virginia Department of Forensic Science]
What is known about forensic-tool capabilities?
Vendor claims are not a universal compatibility guarantee
Cellebrite publicly claims AFU access to locked iPhones, but its service information does not establish support for every model and software version. Virginia’s forensic laboratory has also documented practical access limitations and the importance of a device’s state. Those sources support a conditional answer, not a blanket claim that police can—or cannot—get into any locked iPhone. [Cellebrite UFED] [Virginia Department of Forensic Science]
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GrayKey Preserve: a reported claim, not independent proof
On October 1, 2026, 404 Media reported on a leaked Magnet Forensics video showing a device called GrayKey Preserve and an Evidence Preservation Mode for GrayKey. In the video, a Magnet employee claims the system captures AFU state and retains it despite reboot or power loss. The interface shown in the report provides the phone’s software version and model, rather than its data. The report does not independently validate successful extraction or provide a public technical explanation of how the claimed preservation works. [404 Media]
404 Media reported that security researcher Jiska Classen said the video did not establish the mechanism. She suggested possibilities involving clock manipulation or interference with timed data-expiration processes, but those are hypotheses, not confirmed explanations. The report said Apple and Magnet did not respond to its request for comment. The claim should not be generalized to every iPhone, iOS version, or type of data.
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Can police get into an iPhone without the passcode?
Sometimes forensic access may be possible without the owner providing the passcode, but public sources do not establish a dependable success rate or a current model-by-model capability list. The result may depend on the exact device and iOS release, its BFU or AFU state, and whether a tool supports that combination and the data being sought.
The sources cited here provide no reliable overall statistic for law-enforcement iPhone unlock success, nor a current success rate broken down by model and iOS version. Any precise percentage presented without that scope would be misleading.
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On-device data and Apple-service data are different
Data stored locally on an iPhone and information held by Apple or another service provider are separate questions. Apple publishes guidance for law enforcement about legal process and data it may be able to provide. That does not mean Apple can decrypt every locked phone or provide every item stored locally on it. Apple states: “Apple has never created a backdoor or master key to any of our products or services.” [Apple Government Information Requests]
Whether a provider can disclose particular records depends on what it holds and the applicable legal process. Legal requirements vary by jurisdiction; anyone facing a specific request or investigation should consult a lawyer. This article is general information, not legal advice.
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