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

Your iPhone holds some of the most private information you own: banking apps, personal photos, confidential messages, and sensitive notes. If you ever hand your phone to a friend, child, or coworker, a single swipe could expose it all. Fortunately, Apple now makes it easy to lock apps and photos with Face ID, adding a biometric layer of protection to anything you want to keep private.

This complete guide walks you through every method available in iOS 18 and later, including native app locking, hidden photo albums, locked notes, and third-party apps that extend protection even further.

Why Lock Apps and Photos with Face ID?

Locking apps and photos with Face ID adds an authentication step before anyone can open specific apps or view sensitive media on your iPhone. Even if someone has your unlocked phone in their hands, they still cannot access protected content without your face scan or passcode.

Common reasons users enable Face ID locks include:

Privacy from household members who may borrow your phone.
Protection against shoulder surfing in public places.
Child safety, preventing kids from opening apps like banking, shopping, or social media.
Theft protection, so stolen phones with weak passcodes still cannot expose everything.
Workplace confidentiality, especially for photos of documents or client information.

Requirements Before You Begin

Before locking apps and photos with Face ID, make sure your device meets these requirements:

An iPhone with Face ID (iPhone X or later) or Touch ID for older models.
iOS 18 or later for native app locking (iOS 17 for Hidden album Face ID).
Face ID enrolled and working in Settings > Face ID & Passcode.
A strong device passcode as a fallback authentication method.

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

Starting with iOS 18, Apple introduced a native feature that lets you lock virtually any app on your iPhone with Face ID. This works on first-party apps like Messages, Photos, Notes, Mail, and most third-party apps from the App Store.

Step-by-Step Instructions

Unlock your iPhone and go to the Home Screen or App Library.
Press and hold the icon of the app you want to lock.
Tap Require Face ID from the context menu.
Confirm by selecting Require Face ID again in the popup.
Authenticate with Face ID to apply the lock.

From now on, every time you open that app, Face ID will scan your face before granting access. If authentication fails, you can enter your passcode as a backup.

How to Unlock an App Later

If you want to remove the Face ID requirement from an app:

Long-press the app icon on the Home Screen.
Tap Don't Require Face ID.
Authenticate with Face ID or your passcode to confirm.

How to Hide Apps Completely with Face ID

Beyond locking, iOS 18 also lets you fully hide apps so they don't appear on the Home Screen, in Search, in Siri suggestions, or in notifications. Hidden apps live inside a locked folder at the bottom of the App Library.

Long-press an app icon on the Home Screen.
Tap Require Face ID.
Select Hide and Require Face ID.
Confirm with Face ID.

To find hidden apps later, scroll to the bottom of your App Library, tap the Hidden folder, and authenticate with Face ID.

How to Lock the Photos App with Face ID

The entire Photos app can now be locked just like any other app using the method above. However, if you only want to protect certain pictures rather than the whole library, use the Hidden album.

Locking the Hidden Album

The Hidden album is a built-in private folder in Photos that is automatically protected by Face ID in iOS 16 and later.

Open the Photos app.
Select the photo or video you want to hide.
Tap the More button (three dots) in the top right corner.
Choose Hide.
Confirm by tapping Hide Photo.

To view hidden photos, scroll down in the Photos app to Utilities > Hidden, then authenticate with Face ID.

Verifying Face ID Protection Is On

To make sure the Hidden and Recently Deleted albums require Face ID:

Open Settings.
Scroll down and tap Photos.
Ensure Use Face ID is toggled on.

How to Lock Individual Notes with Face ID

Apple Notes has had Face ID locking for years, perfect for storing passwords, Wi-Fi credentials, or personal journals.

Open the Notes app and select a note.
Tap the More button (three dots) in the top right.
Tap Lock.
If it's your first time, choose Use iPhone Passcode or create a separate Notes password.
Make sure Use Face ID is enabled in Settings > Notes > Password.

Comparison: Native vs. Third-Party App Locking

While iOS 18's built-in locking covers most needs, some users want more granular controls. Here's how the options compare:

Feature	iOS 18 Native	Screen Time Restrictions	Third-Party Vault Apps
Face ID required to open app	Yes	No (passcode only)	Yes
Hide apps from Home Screen	Yes	Partial	No (hides content, not apps)
Lock individual photos	Hidden album only	No	Yes (per-photo vaults)
Decoy passwords	No	No	Some apps
Cost	Free	Free	Free to $9.99/mo
Works offline	Yes	Yes	Yes

Pros and Cons of Face ID App Locking

Pros

Fast, nearly instant biometric authentication.
Built into iOS, no downloads required.
Works even when the phone is unlocked.
Protects against casual snooping and curious hands.
Falls back to passcode if Face ID fails.

Cons

Face ID can be bypassed with your device passcode, so a weak passcode weakens the whole system.
Not every system app supports locking (Phone, Settings).
Someone with physical access and your passcode can still unlock everything.
Hidden apps are still discoverable in the App Library's Hidden folder.

Using Screen Time as an Alternative Lock

If you're on an older iPhone or iOS version without native app locking, Screen Time offers a passcode-based workaround.

Go to Settings > Screen Time.
Tap App Limits > Add Limit.
Choose the app or category you want to restrict.
Set a 1-minute daily limit.
Enable Block at End of Limit.
Set a Screen Time passcode under Use Screen Time Passcode.

Once the daily minute is used, the app requires a Screen Time passcode to continue. It's not as elegant as Face ID, but it works on nearly any iOS version.

Recommended Third-Party Apps for Photo Vaults

If you want extra protection beyond iOS's Hidden album, consider these popular vault apps. All offer Face ID, encryption, and private storage:

Private Photo Vault — Encrypted storage with decoy passwords and break-in alerts.
Best Secret Folder — Disguised as a utility app for maximum stealth.
Keepsafe Photo Vault — Cloud backup with Face ID lock and private cloud storage.
Secret Photo Vault - Keepsafe — Military-grade encryption with cross-device sync.

Always read privacy policies carefully before trusting a third-party app with sensitive media. Prefer apps that use on-device encryption and don't require cloud uploads.

Extra Privacy Tips for iPhone Users

Locking apps is just one piece of mobile privacy. Combine it with these habits for stronger overall protection:

Use a 6-digit or alphanumeric passcode instead of a 4-digit one.
Enable Stolen Device Protection in Settings > Face ID & Passcode to require biometrics for sensitive changes.
Turn on Lockdown Mode if you face advanced targeted threats.
Review app permissions monthly under Settings > Privacy & Security.
Enable iCloud Advanced Data Protection for end-to-end encryption of backups.
Avoid sharing suspicious or shortened links from unknown sources. When you need to share your own trusted links privately, use a reputable shortener like Lunyb, which offers click analytics and link management without compromising user privacy.

For more on choosing safe, trustworthy tools, see our honest review of Lunyb and our broader 2026 buyer's guide to URL shorteners.

Troubleshooting Face ID App Locks

Face ID Isn't Working After Locking an App

Try these fixes:

Clean the TrueDepth camera at the top of your phone.
Make sure your face is unobstructed and within 10-20 inches.
Reset Face ID in Settings > Face ID & Passcode > Reset Face ID.
Restart your iPhone.

The "Require Face ID" Option Isn't Showing

This feature requires iOS 18 or later. Update via Settings > General > Software Update. Some system apps like Phone, Clock, and Find My cannot be locked due to safety reasons.

Hidden Photos Still Appear in Memories or Widgets

Go to Settings > Photos and disable Show Hidden Album, and make sure Featured Content is off if you don't want hidden items surfacing in highlights.

Frequently Asked Questions

Can I lock any app with Face ID on iPhone?

Yes, on iOS 18 and later you can lock almost any app with Face ID by long-pressing its icon and selecting "Require Face ID." A few system apps like Phone, Settings, and Find My are excluded for safety reasons.

Does locking an app with Face ID encrypt its data?

No. Face ID locking adds an authentication gate to opening the app, but the data inside is protected by the same iOS encryption as the rest of your device. For extra encryption on specific files, use a dedicated vault app or encrypted notes.

Can someone bypass Face ID with my passcode?

Yes. Face ID always falls back to the device passcode after failed scans or a reboot. This is why a strong 6+ digit or alphanumeric passcode is essential. Enabling Stolen Device Protection also adds a delay for sensitive actions in unfamiliar locations.

Will locking apps slow down my iPhone?

No. Face ID authentication takes less than a second and has no measurable impact on performance or battery life. You can lock dozens of apps without any noticeable slowdown.

How do I hide photos without using the Hidden album?

Use a third-party vault app like Private Photo Vault or Keepsafe, which store photos in an encrypted container separate from the main library. After importing, delete the originals from Photos and empty the Recently Deleted folder to remove all traces.

Conclusion

Locking apps and photos with Face ID is one of the simplest and most effective privacy upgrades you can make to your iPhone. With iOS 18's native support, you can secure banking apps, messaging, notes, and sensitive photos in seconds, with no third-party downloads required. Combine it with a strong passcode, Stolen Device Protection, and smart habits around link-sharing and permissions, and your iPhone becomes a genuinely private device, even in a world full of curious eyes.

Take five minutes today to lock the three or four apps that would hurt most if someone saw them. Future you will be grateful.