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

Your iPhone holds an enormous amount of personal information: private photos, banking apps, messages, health data, and more. When you hand your phone to a friend to show them a vacation picture or let your kid play a game, the last thing you want is for them to swipe into something sensitive. Fortunately, modern iOS gives you powerful tools to lock apps and photos with Face ID — no jailbreak or sketchy third-party software required.

This comprehensive guide walks you through every native method available in iOS 17 and iOS 18 to secure individual apps, hide entire app collections, and protect your private photos behind biometric authentication. We'll also cover what to do on older devices, common troubleshooting steps, and how to think about mobile privacy holistically.

What Does It Mean to Lock Apps and Photos with Face ID?

Locking apps and photos with Face ID means requiring biometric facial authentication — or a fallback passcode — before an app opens or specific content becomes visible. Even if someone else has your unlocked iPhone in hand, they cannot view protected content without your face.

Apple introduced native per-app locking in iOS 18, which was a major upgrade from previous versions where users had to rely on Screen Time workarounds or app-specific settings. Today, you can lock virtually any app on your home screen with a single tap, and the Photos app has its own dedicated Hidden album that requires Face ID by default.

Why Lock Individual Apps with Face ID?

Beyond the obvious privacy benefit, locking specific apps offers several practical advantages:

• Shoulder surfing protection — Even in public, no one can peek into banking or messaging apps.
• Lending your phone safely — Hand your iPhone to a stranger to take a photo without worrying about them swiping away.
• Family privacy — Kids and partners can use your device without accessing private content.
• Theft mitigation — If someone forces you to unlock your phone, your most sensitive apps stay locked behind a second biometric check.
• Notification privacy — Locked apps automatically hide notification content and don't show recent activity in Spotlight search.

How to Lock Any App with Face ID on iOS 18

Apple's iOS 18 introduced a system-wide feature to lock and hide apps. Here's the step-by-step process:

1. Go to your Home Screen and find the app you want to lock.
2. Touch and hold the app icon until the context menu appears.
3. Tap "Require Face ID" (or "Require Touch ID" on older devices).
4. Confirm by tapping "Require Face ID" in the prompt.
5. Authenticate with Face ID to finalize the setting.

That's it. The next time you or anyone else taps that app, iOS will prompt for Face ID before opening. If authentication fails, the app icon shakes and stays closed.

How to Hide an App Completely

If locking isn't enough, you can hide apps so they don't appear on the Home Screen, in Search, or even in notifications:

1. Touch and hold the app icon.
2. Tap "Require Face ID".
3. Tap "Hide and Require Face ID".
4. Confirm by tapping "Hide App".

Hidden apps move to a locked "Hidden" folder at the bottom of your App Library. To access them, scroll to the bottom of App Library, tap the Hidden folder, and authenticate with Face ID.

How to Unlock or Unhide an App

To reverse the process:

1. Open the app (or find it in the Hidden folder via App Library).
2. Touch and hold the app icon.
3. Tap "Don't Require Face ID" or "Show App".
4. Authenticate with Face ID.

How to Lock Photos with Face ID

Apple's Photos app has had a Hidden album for years, but in iOS 16 and later, the Hidden and Recently Deleted albums are locked behind Face ID by default. Here's how to use it properly.

Hide Individual Photos or Videos

1. Open the Photos app.
2. Tap the photo or video you want to hide.
3. Tap the three-dot menu (...) in the top-right corner.
4. Select "Hide".
5. Confirm by tapping "Hide Photo".

The photo disappears from your main library and moves to the Hidden album, which is itself locked behind Face ID.

Hide Multiple Photos at Once

1. In the Photos app, tap "Select" in the top-right corner.
2. Tap each photo you want to hide.
3. Tap the three-dot menu at the bottom-right.
4. Choose "Hide" and confirm.

Confirm Face ID Protection on the Hidden Album

To verify your Hidden album is locked:

1. Open Settings > Apps > Photos.
2. Scroll down to "Use Face ID".
3. Toggle it ON if it isn't already.

Now the Hidden and Recently Deleted albums require Face ID every time you open them. You'll find them under the Utilities section of the Albums tab.

Locking Apps on Older iOS Versions (iOS 17 and Earlier)

If you can't update to iOS 18, you still have options — they're just less elegant.

Method 1: Use Screen Time

1. Open Settings > Screen Time.
2. Tap App Limits > Add Limit.
3. Choose the app(s) you want to lock.
4. Set the time limit to 1 minute.
5. Enable "Block at End of Limit".
6. Set a Screen Time passcode under Settings > Screen Time > Lock Screen Time Settings.

After one minute of daily use, the app locks and requires the Screen Time passcode to reopen.

Method 2: Use App-Specific Locks

Many apps include built-in Face ID protection. Common examples:

App	Face ID Setting Location
WhatsApp	Settings > Privacy > Screen Lock
Signal	Settings > Privacy > Screen Lock
Notes	Settings > Notes > Password > Use Face ID
1Password	Settings > Security > Face ID
Bank of America	Menu > Settings > Security Center
PayPal	Profile > Security > Face ID
Dropbox	Account > Security > Face ID Lock

Comparing Native Locking Methods

Here's how the different approaches stack up:

Method	iOS Version	Hides Notifications	Hides from Search	Ease of Use
Require Face ID (iOS 18)	18+	Yes	Optional	Excellent
Hide and Require Face ID	18+	Yes	Yes	Excellent
Screen Time Limit	12+	No	No	Moderate
App-Specific Lock	Varies	Partial	No	Good
Photos Hidden Album	16+	N/A	Yes	Excellent

Pros and Cons of Face ID App Locking

Pros

• Zero cost — built directly into iOS.
• Extremely fast authentication (under a second).
• No third-party app required, reducing privacy risk.
• Hidden apps don't appear in Siri suggestions or notifications.
• Works seamlessly with iCloud sync.

Cons

• Requires iOS 18 for the most polished experience.
• Face ID can fail with masks, sunglasses, or in low light.
• Passcode fallback means a determined person who knows your passcode can still access locked apps.
• Some system apps (like Settings) cannot be locked.

Troubleshooting: Face ID Not Working on Apps

If Face ID prompts aren't appearing or are failing repeatedly, try these fixes in order:

1. Restart your iPhone. Hold the side button + volume button, then slide to power off.
2. Update iOS. Go to Settings > General > Software Update.
3. Re-enroll Face ID. Settings > Face ID & Passcode > Reset Face ID, then set it up again.
4. Check app permissions. Settings > Face ID & Passcode > Other Apps — make sure the toggle is on for the app in question.
5. Clean the TrueDepth camera. A smudged front camera notch is a leading cause of Face ID failures.
6. Disable and re-enable the lock. Long-press the app icon, tap "Don't Require Face ID," then re-enable it.

Beyond App Locking: Broader Mobile Privacy Tips

Locking apps is one layer of protection, but real digital privacy requires a wider strategy. Consider these additional steps:

1. Enable Stolen Device Protection

Introduced in iOS 17.3, this feature adds a security delay before someone can change sensitive settings (like your Apple ID password) even if they know your passcode. Enable it under Settings > Face ID & Passcode > Stolen Device Protection.

2. Lock Down Notifications on the Lock Screen

Settings > Notifications > Show Previews > When Unlocked. This prevents message content from appearing on the lock screen.

3. Use Private Browsing and Encrypted DNS

Safari supports per-tab Face ID locking on Private tabs. You can also configure encrypted DNS in Settings > General > Network to prevent third parties from observing which domains you visit.

4. Be Careful with Links

Shortened links can hide where you're actually going. Use a transparent, reputable link service that shows analytics and supports password-protected links. If you create or share short links regularly, services like Lunyb let you generate trackable, privacy-respecting URLs you can confidently share. For a deeper look, see our honest review of Lunyb and our 2026 buyer's guide to URL shorteners.

5. Review App Permissions Quarterly

Settings > Privacy & Security > review which apps have access to your camera, microphone, contacts, and location. Revoke anything that doesn't need it.

What About Android Users?

While this guide focuses on Face ID (an Apple feature), Android users have similar options. Samsung's Secure Folder, Xiaomi's App Lock, and Google's Private Space (Android 15+) provide comparable functionality using fingerprint or face unlock. The core principle is the same: add a biometric layer between casual access and sensitive content.

Frequently Asked Questions

Can I lock the Settings app or system apps with Face ID?

No. Apple does not allow locking certain core system apps including Settings, Phone, Find My, and the App Store. These remain accessible whenever your iPhone is unlocked. However, you can still protect specific actions within Settings (like Apple ID changes) using Stolen Device Protection.

Will locked apps still receive notifications?

Yes, but the notification content is hidden by default. You'll see a generic "Notification" banner instead of the actual message until you authenticate with Face ID and open the app. This is a privacy win for locked messaging or banking apps.

What happens if Face ID fails — can I still get in?

After two failed Face ID attempts, iOS falls back to your device passcode. Anyone who knows your passcode can bypass Face ID, so keep your passcode strong (at least 6 digits, ideally alphanumeric) and never share it.

Does locking an app also lock its iCloud data?

No. App locking is local to your device. If your iCloud account is compromised on another device, the data syncs there without Face ID protection. Always enable two-factor authentication on your Apple ID for full coverage.

Can someone see my hidden apps if they connect my iPhone to a computer?

Hidden apps remain installed and their data exists in your device backup. If someone has your unlocked iPhone and computer trust permissions, they could potentially see hidden apps via iTunes/Finder or iMazing. Always disable "Trust This Computer" prompts from unknown machines and encrypt your backups.

Final Thoughts

Locking apps and photos with Face ID is one of the simplest, highest-impact privacy moves you can make on your iPhone. The feature is free, fast, and built right into iOS — there's no reason not to use it for your most sensitive apps and any photos you'd rather keep out of casual view.

Start by locking your banking, messaging, photos, and notes apps. Move sensitive pictures to the Hidden album. Enable Stolen Device Protection. And remember that biometric locks are just one piece of a broader privacy posture that includes strong passcodes, careful link sharing, and regular permission audits. A few minutes of setup today buys you significant peace of mind tomorrow.