How to Lock Apps and Photos with Face ID: Complete 2026 Guide

Your iPhone holds a surprising amount of sensitive information: banking apps, private conversations, personal photos, health records, and work documents. If someone borrows your phone to make a call or your kids grab it to play a game, they could easily wander into apps and albums you'd rather keep private. Fortunately, Apple has built powerful native features that let you lock apps and photos with Face ID, no third-party tools required.

This complete guide walks you through every method available in iOS 18 and later, including locking individual apps, hiding photos behind biometric authentication, and combining these features for maximum privacy. Whether you're on an iPhone X or the latest iPhone 16 Pro, these steps will work for you.

Why Lock Apps and Photos with Face ID?

Locking apps and photos with Face ID adds a second layer of biometric protection on top of your device passcode. Even if someone knows your passcode or your phone is already unlocked, they can't access protected apps or hidden albums without your face.

Common reasons users enable app and photo locking include:

• Sharing your device with children, family members, or coworkers
• Protecting financial apps like banking, PayPal, or crypto wallets
• Keeping messages private from prying eyes over your shoulder
• Securing personal photos from accidental sharing or unwanted viewers
• Preventing app switching when handing your phone to someone briefly

Face ID is uniquely suited for this because it's fast, contactless, and mathematically extremely difficult to spoof compared to Touch ID or a simple passcode.

Requirements Before You Start

Before you can lock apps and photos with Face ID, make sure your device meets these prerequisites:

1. An iPhone with Face ID (iPhone X or later, excluding iPhone SE models which use Touch ID)
2. iOS 18 or later installed (Settings > General > Software Update)
3. Face ID enrolled and working (Settings > Face ID & Passcode)
4. A device passcode set as a fallback authentication method

If you're running an older version of iOS, some features described below (particularly system-wide app locking) may not be available. Update your device first for the best experience.

How to Lock Any App with Face ID (iOS 18+)

Starting in iOS 18, Apple introduced a native feature that lets you require Face ID to open any app on your iPhone, not just Apple's built-in apps. This is the biggest privacy upgrade in years.

Step-by-Step Instructions

1. Locate the app you want to lock on your Home Screen or App Library.
2. Touch and hold the app icon until a context menu appears.
3. Tap Require Face ID from the menu.
4. Confirm by tapping Require Face ID again in the popup.
5. Authenticate with Face ID to lock the setting in place.

The app is now locked. Every time you or anyone else tries to open it, Face ID must succeed first. If authentication fails, the app won't open and its content stays hidden even from Spotlight search, Siri suggestions, and notifications previews.

How to Unlock an App

To remove the Face ID requirement from an app:

1. Touch and hold the locked app icon.
2. Tap Don't Require Face ID.
3. Authenticate with Face ID to confirm the change.

How to Hide Apps Behind Face ID

Locking an app keeps its contents private, but the app icon still appears on your Home Screen. If you want to go a step further and hide the app entirely, iOS 18 offers a Hidden apps folder.

Hiding an App Completely

1. Touch and hold the app icon you want to hide.
2. Tap Require Face ID.
3. Select Hide and Require Face ID instead of just "Require Face ID."
4. Tap Hide App to confirm.
5. Authenticate with Face ID.

Hidden apps are moved to a locked Hidden folder at the bottom of your App Library. They no longer appear in search results, Siri suggestions, notifications, or the Home Screen. To access them, scroll to the end of your App Library, tap the Hidden folder, and authenticate with Face ID.

How to Lock Photos with Face ID

Apple's Photos app has two built-in mechanisms for locking photos with Face ID: the Hidden album and the Recently Deleted album. Both are automatically locked in iOS 16 and later.

Method 1: Using the Hidden Album

The Hidden album is the primary way to lock specific photos behind Face ID authentication.

1. Open the Photos app.
2. Select the photo or video you want to hide (tap and hold, or use Select in the top corner for multiple items).
3. Tap the three-dot menu (•••) in the bottom-right corner.
4. Tap Hide.
5. Confirm by tapping Hide Photo.

The photo is removed from your main library and moved to the Hidden album, which requires Face ID to open.

Accessing the Hidden Album

1. Open the Photos app.
2. Scroll down and tap Utilities or find the Hidden album under Utilities.
3. Face ID will prompt you to authenticate.
4. Once authenticated, you can view, unhide, or delete the photos inside.

Method 2: Verifying the Hidden Album Lock Is Enabled

By default, the Hidden album is locked in newer iOS versions, but it's worth confirming:

1. Open Settings.
2. Tap Apps, then Photos.
3. Scroll to the Use Face ID toggle and make sure it's turned on.
4. Also verify Show Hidden Album is set according to your preference.

If you turn off "Show Hidden Album," the folder is invisible in the Albums view entirely, adding an extra layer of stealth.

Locking Apple's Built-In Apps with Face ID

Beyond third-party apps, several Apple apps have their own dedicated Face ID lock settings. These are worth enabling for maximum protection.

Notes App

1. Go to Settings > Apps > Notes.
2. Tap Password.
3. Choose Use Device Passcode or set a custom password.
4. Enable the Use Face ID toggle.

Now individual notes can be locked by opening a note, tapping the share icon, and choosing Lock Note.

Safari Private Tabs

1. Go to Settings > Apps > Safari.
2. Scroll to Privacy & Security.
3. Enable Require Face ID to Unlock Private Browsing.

Feature Comparison: Native Face ID Locking Options

Feature	Requires iOS	Hides Content from Search	Hides from Notifications	Works on Third-Party Apps
Require Face ID (Lock App)	iOS 18+	Yes	Yes	Yes
Hide App	iOS 18+	Yes	Yes	Yes
Hidden Photos Album	iOS 16+	Yes	N/A	Photos only
Notes Lock	iOS 9.3+	Partial	Yes	Notes only
Safari Private Browsing Lock	iOS 17+	N/A	N/A	Safari only

Pros and Cons of Locking Apps with Face ID

Pros

• Native and free — no third-party apps or subscriptions required
• Fast authentication — Face ID unlocks in under a second
• Deep system integration — hides content from search, Siri, and notifications
• Works with any app in iOS 18 and later
• Privacy-preserving — Face ID data never leaves your device's Secure Enclave

Cons

• Requires iOS 18 for system-wide app locking
• Older iPhone SE models rely on Touch ID instead
• Someone with your device passcode can still override Face ID
• No per-app timeout customization (lock triggers every session)

Best Practices for Maximum Privacy

Locking apps and photos is only one piece of a larger privacy strategy. To truly secure your iPhone, combine app-level protection with these habits:

1. Use a strong alphanumeric passcode instead of a 4- or 6-digit number. Someone shoulder-surfing your PIN can bypass all Face ID protections.
2. Enable Stolen Device Protection under Settings > Face ID & Passcode to add a security delay for sensitive changes when you're away from familiar locations.
3. Turn off lock screen widgets and notification previews that could leak private information.
4. Enable Advanced Data Protection in iCloud settings for end-to-end encryption of photos, notes, and backups.
5. Review app permissions monthly under Settings > Privacy & Security to revoke unnecessary access.
6. Be cautious with links you receive via message or email. Use a trusted link management platform like Lunyb when sharing URLs, so you can create private, trackable short links and check destinations before clicking suspicious ones.

For a deeper dive into safe link sharing and URL management tools, check out our 2026 buyer's guide to URL shorteners and our honest review of Lunyb.

Troubleshooting Common Issues

Face ID Isn't Prompting When I Open a Locked App

If Face ID doesn't trigger when opening a locked app, try these fixes:

1. Restart your iPhone — a simple reboot resolves most authentication glitches.
2. Check that Face ID is enabled for iPhone Unlock in Settings > Face ID & Passcode.
3. Re-enroll your face if authentication has become unreliable.
4. Confirm iOS is fully updated to the latest version.

I Can't Find the "Require Face ID" Option

This feature is only available on iOS 18 or later. Update your device via Settings > General > Software Update. If you're on a compatible iOS version and still don't see it, try touching and holding directly on the app icon (not a folder containing the app).

My Hidden Photos Are Still Showing in Search

Hidden photos should not appear in Photos app search results, but they may appear in Spotlight if indexing is stale. Go to Settings > Siri & Search > Photos and disable "Show Content in Search" to prevent this.

Third-Party App Considerations

Many popular apps like WhatsApp, Signal, Telegram, and various banking apps offer their own built-in Face ID lock inside the app settings. These work independently of iOS 18's system-wide locking and can be layered together for redundant protection.

For example, you can enable WhatsApp's built-in Screen Lock (Settings > Privacy > Screen Lock) and also set the iOS-level "Require Face ID" on the WhatsApp icon. This means Face ID authenticates twice, once to open the app and once inside it — overkill for most users but ideal for highly sensitive conversations.

What About Android?

Android doesn't have a universal equivalent to Face ID app locking, but many manufacturers offer similar features. Samsung's Secure Folder, Xiaomi's App Lock, and Google Pixel's Private Space all provide biometric app locking through fingerprint or face unlock. The specific setup steps vary by device, but the concept is the same: isolate sensitive apps and content behind a biometric gate.

FAQ

Can someone bypass Face ID app lock with my passcode?

Yes. If someone knows your device passcode, they can bypass Face ID requirements after a few failed attempts. This is why using a strong alphanumeric passcode and enabling Stolen Device Protection are essential complements to Face ID locking.

Does locking an app hide its notifications?

Yes. When you enable "Require Face ID" on an app in iOS 18, its notification previews are automatically hidden from your lock screen and notification center. You'll still see that a notification arrived, but the content is redacted until Face ID authenticates.

Can I lock the Photos app itself with Face ID?

Yes, in iOS 18 you can require Face ID to open the entire Photos app by touching and holding its icon and selecting "Require Face ID." This is stronger than only using the Hidden album, because it protects your entire photo library.

Will Face ID work with sunglasses or masks?

Face ID supports mask detection on iPhone 12 and later running iOS 15.4+. It also works with most sunglasses, though some polarized lenses can interfere with the infrared sensors. You can enable "Face ID with a Mask" under Settings > Face ID & Passcode.

Is Face ID more secure than a passcode alone?

Face ID is significantly harder to spoof than watching someone type a passcode. Apple estimates a 1 in 1,000,000 chance of a random person unlocking your iPhone with Face ID versus 1 in 10,000 for a 6-digit passcode. However, Face ID is designed as a convenience layer on top of your passcode, not a replacement — both work together for optimal security.