Free tools Windows power users keep installed
One-click scans. No signup required.
Magnet Forensics reportedly demonstrated a GrayKey capability that can preserve an iPhone’s After First Unlock (AFU) state through a reboot or loss of power. That is a vendor claim described in a law-enforcement tutorial video—not an independently verified iPhone exploit. The reporting does not establish how the capability works, when it became available, or whether it works on current iOS versions.
What the GrayKey report says
In an October 1, 2026 report, 404 Media said it obtained an educational video made for law-enforcement agents, apparently dating from early 2025. The video reportedly presents a new device called GrayKey Preserve and an Evidence Preservation Mode for existing GrayKey hardware.
A Magnet Forensics employee in the video says the product can retain the phone’s AFU state even if it reboots or loses power. The employee describes that preservation as the key capability, but the video, as reported, does not explain the technical mechanism. The employee is not named in the report excerpt.
What iPhone Automatic Restart is designed to do
Apple calls the feature “Automatic Restart.” Its security guide, published January 28, 2026, says it applies to iOS 18.1 and later and uses the Secure Enclave to monitor unlock events. After a device has remained locked for a prolonged period, it restarts and purges sensitive security keys and transient data from memory.
#1 Best Overall
- [2 Pack] This product includes 2 pack privacy screen protectors.WORKS FOR iPhone 17e/16e/14/iPhone 13/13 Pro 6.1 Inch tempered glass screen protector.Featuring maximum protection from scratches, scrapes, and bumps.[Not for iPhone 16 6.1 inch, iPhone 13 mini 5.4 inch, iPhone 13 Pro Max/iPhone 14 Pro Max/iPhone 14 Plus 6.7 inch, iPhone 14 Pro 6.1 inch]
- Specialty: to enhance compatibility with most cases, the Tempered glass does not cover the entire screen. HD ultra-clear rounded glass for iPhone 17e/16e/14/iPhone 13/13 Pro is 99.99% touch-screen accurate.
- 99.99% High-definition clear hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
That restart moves the device from AFU—After First Unlock, the security state after the passcode has been entered since startup—to BFU, or Before First Unlock, the state before the first unlock after startup. AFU and BFU describe security states; they do not mean whether a phone is physically on or off. Apple’s guide describes the trigger as a “prolonged period” and does not specify a 72-hour threshold there.
What is—and is not—confirmed
- Reported: Magnet’s tutorial video presents GrayKey Preserve and Evidence Preservation Mode as preserving AFU across reboot or power loss.
- Not independently verified in the reporting: a technical mechanism, successful independent testing, or effectiveness on current iOS releases.
- Not established: when the capability first became available or whether it has been used in investigations.
Some discussion has speculated that manipulating a clock or interfering with data-expiration processes could explain a bypass. That is speculation, not a confirmed account of how GrayKey works. 9to5Mac’s October 1, 2026 coverage likewise notes that availability, real-world use, and performance against later iOS releases are unclear; its mechanism discussion is not an independent validation.
Rank #2
- [3 Pack] This product includes 3 pack privacy screen protectors.WORKS FOR iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch tempered glass screen protector. Due to the rounded edge design of the iPhone 16/iPhone 15/iPhone 15 Pro and to enhance compatibility with most cases,the tempered glass screen protectors will be slightly smaller than the phone screen.[Not for iPhone 16e 6.1 inch, iPhone 15 Plus/iPhone 15 Pro Max/iPhone 16 Plus 6.7 inch,iPhone 16 Pro 6.3 inch,iPhone 16 Pro Max 6.9 inch]
- Specialty: HD rounded glass for iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch is 99.99% touch-screen accurate.
- 99.99% High-definition hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints. Featuring maximum protection from scratches, scrapes, and bumps.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
Apple’s supervised-device setting
Apple documents a management exception for supervised devices running iOS 18.4 or later: administrators can control Automatic Restart with the IdleRebootAllowed setting. Apple says Automatic Restart is off by default on supervised devices. This is a documented configuration option, separate from the reported GrayKey capability.
How Cellebrite’s claim compares
Cellebrite’s Spring 2026 product materials describe Safeguard Mode as addressing iOS inactivity timers and maintaining access after reboot. That is a separate vendor claim, not corroboration of Magnet’s demonstration or a controlled comparison.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Rank #3
- Perfect Fit for iPhone 17 Pro Max：Engineered exclusively for iPhone 17 Pro Max with seamless edge-to-edge coverage, ensuring precise alignment and reliable full-screen protection.
- Advanced Privacy Protection：Features a 28° privacy filter with smooth 2.5D curved edges, preventing side glances in public. Your screen remains visible only to you—ideal for commuting, traveling, and crowded environments.
- Effortless Installation：Equipped with an auto dust-elimination tool that delivers a fast, accurate, and bubble-free application, keeping your screen perfectly clear with minimal effort.
- Military-Grade Protection：Made of nano-reinforced 9H tempered glass, SGS certified. Provides 5X stronger scratch resistance and proven durability, withstanding thousands of pressure and impact tests.
- Smudge & Fingerprint Resistant：Hydrophobic and oleophobic coating repels fingerprints, sweat, and oil—ensuring your screen stays clean, clear, and smooth to the touch.
| Product or feature | What the source says it does | Evidence and limits |
|---|---|---|
| GrayKey Preserve and Evidence Preservation Mode | Magnet’s reported tutorial says it preserves AFU through reboot or power loss. | Claim appears in a law-enforcement tutorial video apparently from early 2025, as reported by 404 Media on October 1, 2026. No verified mechanism or independent testing is established in that reporting. |
| Cellebrite Safeguard Mode | Cellebrite describes it as addressing inactivity timers and maintaining access after reboot. | Described in Cellebrite’s Spring 2026 product materials; the materials do not independently verify Magnet’s claim or establish a controlled comparison. |
The available information does not support ranking the products, treating their methods as equivalent, or assuming either works with every iPhone or current iOS release.
Quick Recap
Best Value
- 【Innovative 1-Step Installation! 】Simplify the application process! Featuring automatic alignment functionality, enjoy a quick and easy installation,swiftly eliminate air bubbles, providing you a hassle-free installation experience for the iPhone 16 Pro Max privacy screen protector.Friendly Reminder: Please watch the installation video before you begin.
- 【Indestructible Ultra 9H Glass for Ultimate Protection】With nearly diamond-like 9H hardness, this privacy screen protector for iPhone 16 Pro Max effectively avoids shattering, cracking, and scratches. It is up to 4X stronger than traditional tempered glass protectors and reliably protects the entire phone screen from compression and other impacts.
- 【Ultra-Clear and Ultra-Sensitive】This protective film covers the iPhone 16 Pro Max 6.9-inch, ensuring you feel as if there's nothing on your iPhone screen.The high-quality anti-fingerprint surface keeps your screen clean, bubble-free, delivering the most natural viewing and sensitive touch for videos and gaming.
- 【26° Anti-Spy Privacy Protection】Featuring upgraded micro-louver optical technology, this iPhone 16 Pro Max privacy screen protector delivers a precise 26° privacy viewing angle. It maintains ultra HD clarity from the front view, while instantly darkening the screen for anyone viewing from the sides or behind.
- 【Professional After-Sales Support】Each package contains 4 privacy screen protectors for the 6.9-inch iPhone 16 Pro Max. We also offer a 365-day warranty service. We provide free replacement support for installation failures caused by product defects, size mismatch, or other verified quality issues. Please feel free to contact our customer support team for assistance.
Rank #4
- 【Industry-Leading 100% Anti-Spy Privacy Protection】Designed for iPhone 17 Pro. Larger iPhone screens are easier for others to glance at, so UltraGlass uses patented, SEGI-certified 25° Blackout-3 optical technology to help block side views and keep emails, banking apps, and private content visible only to you—while keeping the front view HD-clear and comfortable through hours of scrolling and streaming.
- 【Unbreakable TOP 9H+ Glass, the Excellent 2nd Screen for Your iPhone】Boasting unparalleled shatter resistance and durability. And the core excellence is the top 9H+ tempered glass material, which is widely applied in aerospace and military fields for its ① Shatter-proof ② Scratch & Wear Resistance ③ Durability that is 7-8 times higher than other materials. Thus, UltraGlass builds a second tough screen for your iPhone 17 Pro.
- 【Industry NO.1 Military-Grade Shatterproof】Authorized by the International Military Standard with 50+ rigorous engineering tests of 220 lbs impact, 8,000+ drop tests, 20,000+ scratch tests, etc., its strength, toughness and durability perform NO.1 among all glass. By especially breaking the industry's record with a 12ft drop, the iPhone 17 Pro screen protector is ensured to be unbreakable from its surface to every edge and corner!
- 【Invisible Armor, 1:1 Full Covers the iPhone's Screen】Mimicking the iPhone's original screen design, it uses a 1:1 3D curved reinforced black edge that wraps around every curve — case friendly — while securing even the most vulnerable edges. Seamlessly blending with the iPhone 17 Pro screen, it's virtually invisible and feels like the original screen while offering enhanced full-screen protection!
- 【0 Bubbles + 0 Dust + 0 Misaligned =100% Successful Installation】Includes everything you need with pioneering automatic positioning, dust removal, and absorption technology, making the installation just effortlessly easy in seconds. No bubbles, no troubles—transforming beginners into experts.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
