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September 28, 2026 — A wave of Chinese-language reports has claimed the iPhone 18 Pro's Face ID is "completely broken" and poses a "security vulnerability." Apple has indeed confirmed a software bug exists. But the gap between what Apple actually said and what's circulating online is significant.

Here is what Apple confirmed, what independent reviewers reproduced, and what the misleading reports got wrong.

Quick Answer: Some iPhone 18 Pro and Pro Max units experience a freeze and automatic reboot after a failed Face ID authentication attempt in protected apps. Apple has confirmed this is a software bug, not a hardware defect or a security breach. A fix is expected in iOS 27.0.1 as early as next week. Users do not need to replace their phones. Claims about "strangers unlocking the phone" are not supported by any official statement or independent testing.
Confirmed by Apple Software Bug, Not Hardware Fix in iOS 27.0.1 No Security Breach No Replacement Needed

iPhone 18 Pro Face ID Bug: What Apple Actually Confirmed

The issue was first reported by 9to5Mac, which reproduced the bug on a European iPhone 18 Pro model [citation:1]. Apple subsequently confirmed to MacRumors that a software update would be released to address the problem [citation:2].

The affected devices are the iPhone 18 Pro and iPhone 18 Pro Max only. The standard iPhone 18 is not affected because it does not use the redesigned Face ID system [citation:1].

The reports circulating in Chinese media — describing "Face ID completely failed" and "security vulnerability" — do not match what Apple actually said. Apple's official statement, relayed through its support channels, is clear: the problem is software-related and has nothing to do with the hardware itself [citation:4][citation:8].

What Actually Happens: Freeze and Reboot

The bug is specific and reproducible. It does not occur when unlocking the phone from the lock screen. It occurs when Face ID is used to authenticate within a protected app — such as the Passwords app, private Safari tabs, or any third-party app the user has chosen to lock behind Face ID [citation:1][citation:3].

The sequence is:

  1. The user attempts Face ID authentication in a protected app.
  2. The first attempt fails (for example, because the face is partially covered).
  3. The user taps "Try Face ID Again."
  4. The screen freezes and stops responding to all touch input.
  5. After a few seconds, the device panics and reboots to the lock screen [citation:1][citation:20].

Not all users are affected, and some who are affected experience it only intermittently [citation:1][citation:14]. Some users have also reported a separate but related issue: "Face ID is Not Available" when attempting to set up Face ID for the first time, or when wearing certain types of glasses [citation:18].

Why This Is Not a Security Breach

Several Chinese reports have described the bug as a "security vulnerability" and claimed it allows "strangers to temporarily unlock the device." No official statement, independent testing, or user report supports this claim.

Apple explicitly stated that biometric data stored on affected devices is completely secure and has not been compromised [citation:4]. The bug causes the phone to stop working — it does not cause it to unlock for the wrong person.

What the Reports Got Wrong:
  • "Face ID completely failed" — False. The hardware works. It's a software bug that triggers a reboot.
  • "Security vulnerability" — Misleading. The bug causes a crash, not unauthorized access.
  • "Strangers can unlock the phone" — Unsupported. No evidence exists for this claim.
  • "Users need to replace their phones" — False. Apple has confirmed a software fix is coming [citation:3].

The Root Cause: A Software Memory Bug

According to Apple's internal investigation, the problem is a memory allocation error in the new system's deep-map processing algorithm for the Face ID sensor [citation:4]. It is entirely a software issue.

The complication arises from the iPhone 18 Pro's redesigned Face ID system. To shrink the Dynamic Island, Apple moved the infrared camera underneath the display, near the top-left corner where the status bar time is shown [citation:1][citation:16]. This is a new hardware configuration, and the software that drives it appears to have an edge-case bug that only manifests under specific authentication-failure conditions [citation:1].

This context explains why the bug exists — new hardware design, new software integration — but it does not make it less frustrating for affected users.

iOS 27.0.1 Is Coming Next Week

Apple has confirmed to 9to5Mac that a software update with a fix is planned for early next week [citation:2]. MacRumors logs show Apple is already testing iOS 27.0.1, which is the likely vehicle for the patch [citation:6][citation:10].

PhoneArena reported that Apple's confirmation came after some users were told by support staff to seek a hardware replacement — advice that appears to have been a misdiagnosis [citation:3].

What This Means for Affected Users

If you are experiencing this bug, you do not need to visit an Apple Store or request a replacement. The fix will arrive via a standard software update. Until then, avoid repeated failed Face ID attempts in protected apps — enter your passcode instead of tapping "Try Face ID Again" [citation:3][citation:20].

What Users Should Do Now

Situation Recommended Action
Experiencing the freeze/reboot bugWait for iOS 27.0.1. Use passcode instead of retrying Face ID in protected apps.
Unable to set up Face IDTry setting it up in bright outdoor light, or without glasses if possible [citation:18].
Already visited Apple StoreIf a replacement was issued, the bug may still occur on the new unit — it is software, not hardware [citation:8][citation:12].
Concerned about securityApple confirms biometric data is secure. No unauthorized access has been reported [citation:4].

Key Takeaways

# What You Need to Know About the iPhone 18 Pro Face ID Bug
1Apple confirmed a software bug — not a hardware defect, not a security breach [citation:2][citation:4]
2The bug causes a freeze and reboot after a failed Face ID attempt in protected apps [citation:1][citation:3]
3Biometric data is not compromised — Apple explicitly stated security is unaffected [citation:4]
4The fix is iOS 27.0.1 — expected early next week [citation:2][citation:6]
5No replacement is needed — users who swapped phones found the bug persists [citation:8][citation:12]
6Chinese reports exaggerated the problem — claims of "strangers unlocking" are unsupported
The Bottom Line: The iPhone 18 Pro's Face ID bug is real, and Apple has confirmed it. But it is a software crash — not a security failure. The phone freezes and reboots; it does not unlock for the wrong person. A fix is coming within days. The most important thing for affected users to know is: don't waste a trip to the Apple Store. This is a patch, not a replacement.
Sources and Methodology (as of September 28, 2026):
  • 9to5Mac — Original bug reproduction, freeze/reboot behavior, context of under-display Face ID change [citation:1]
  • MacRumors — Apple confirmation of fix timeline, iOS 27.0.1 testing [citation:2][citation:6][citation:10]
  • PhoneArena — Confirmation that no Apple Store visit is needed, software-only issue [citation:3]
  • 澎湃新闻 / 财闻 — Apple official statement on software cause, biometric data security, temporary workaround [citation:4]
  • 新浪网 — Apple customer service response, system software issue, software update planned [citation:8]
  • 海报新闻 — Customer service confirmation, iPhone 18 Pro pricing context [citation:12]
  • MacRumors Forums — User reports of "Face ID Not Available," glasses-related setup issues [citation:18]
  • iPhoneSoft — Reproduction details, protected app context, Apple's clarification [citation:20]
Published: September 28, 2026. iPhone 18 Pro and Pro Max available now. iOS 27.0.1 expected early next week. Apple has not officially confirmed the specific version number.