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

Your iPhone holds an incredible amount of personal information — private messages, banking details, sensitive photos, and confidential notes. While Face ID unlocks your device, it doesn't automatically protect individual apps once someone gets past the lock screen. Fortunately, Apple has expanded its built-in security features, making it easier than ever to lock apps and photos with Face ID directly from iOS.

This comprehensive guide walks you through every method to add an extra layer of biometric protection to your most sensitive apps and content, whether you're running iOS 18, iOS 17, or earlier versions.

Why You Should Lock Individual Apps and Photos with Face ID

Locking individual apps with Face ID adds a second authentication layer beyond your device passcode. Even if someone borrows your unlocked phone or knows your passcode, they still cannot access apps protected by Face ID without your face.

Here are the main reasons to enable app-level Face ID protection:

• Shared device scenarios: Family members or friends who occasionally use your phone won't stumble into private conversations or photos.
• Lost or stolen devices: If your iPhone is stolen while unlocked, thieves cannot access financial apps, password managers, or private photos.
• Passcode exposure: Even if someone shoulder-surfs your passcode, biometric-locked apps remain secure.
• Privacy at work: Keeping personal apps secured during screen sharing or when handing off your phone for a quick photo.
• Peace of mind: Sensitive content — health records, journals, financial data — deserves extra protection.

Native iOS Methods to Lock Apps with Face ID

Since iOS 18, Apple introduced a native app-locking feature that lets you require Face ID before opening any app on your iPhone. This is the simplest and most secure method because it works system-wide without third-party tools.

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

1. Locate the app you want to lock on your Home Screen or in the App Library.
2. Touch and hold the app icon until the context menu appears.
3. Tap Require Face ID (or Require Touch ID on supported devices).
4. Confirm by tapping Require Face ID again in the pop-up.
5. Authenticate with Face ID to finalize the setting.

From that point on, the app will require Face ID authentication every time it's opened. Its contents also won't appear in search, notifications, or shared content suggestions — a significant privacy bonus.

How to Hide Apps Entirely (Beyond Just Locking)

iOS 18 also introduced the ability to hide apps completely inside a locked folder within the App Library. To hide an app:

1. Touch and hold the app icon.
2. Tap Require Face ID.
3. Select Hide and Require Face ID.
4. Confirm the action and authenticate.

The app disappears from your Home Screen, search results, and notifications. It only appears inside the Hidden folder at the bottom of the App Library, which itself requires Face ID to open.

How to Unlock an App or Remove Face ID Protection

1. Find the locked app in the App Library or Hidden folder.
2. Touch and hold the app icon.
3. Tap Don't Require Face ID.
4. Authenticate to confirm.

How to Lock the Photos App with Face ID

Photos often contain some of the most sensitive personal data on your phone. There are two main approaches: locking the entire Photos app or using the built-in Hidden album for select images.

Method 1: Lock the Entire Photos App

Using the iOS 18 native locking feature described above, you can require Face ID for the Photos app itself:

1. Long-press the Photos app icon.
2. Tap Require Face ID.
3. Confirm and authenticate.

Now every attempt to open Photos will demand Face ID first.

Method 2: Use the Hidden Album (iOS 16 and Later)

Apple's Hidden album already requires Face ID by default. To move photos into it:

1. Open the Photos app and select the photo(s) you want to hide.
2. Tap the share icon or the three-dot menu.
3. Choose Hide.
4. Confirm by tapping Hide Photo.

To view hidden photos, scroll to the bottom of the Albums tab, tap Hidden, and authenticate with Face ID.

Ensure Hidden Album Face ID Lock Is Enabled

1. Open Settings > Apps > Photos.
2. Scroll to Use Face ID and toggle it on.

This ensures both the Hidden and Recently Deleted albums require biometric authentication.

Locking Specific Popular Apps with Face ID

Some apps offer their own built-in Face ID locks in addition to iOS's system-wide option. Using both provides redundant protection.

WhatsApp

1. Open WhatsApp and go to Settings > Privacy.
2. Tap Screen Lock.
3. Toggle on Require Face ID.
4. Choose how quickly the lock activates (immediately, after 1 minute, 15 minutes, or 1 hour).

Signal

1. Open Signal and tap your profile.
2. Go to Privacy.
3. Enable Screen Lock.
4. Adjust the Screen Lock Timeout as desired.

Notes

To lock individual notes with Face ID:

1. Open Settings > Apps > Notes > Password.
2. Choose an account, set a password, and enable Use Face ID.
3. In the Notes app, open a note, tap the three-dot menu, and select Lock.

Banking and Finance Apps

Most banking apps (Chase, Bank of America, Revolut, Wise) offer Face ID login in their in-app security settings. Enable it wherever possible — it's typically found under Settings > Security > Face ID / Biometrics.

Comparison: iOS Native Lock vs. Third-Party App Locks

Feature	iOS Native (iOS 18+)	In-App Face ID Lock	Third-Party Lockers
Works on all apps	Yes	Only if the app supports it	Limited (jailbreak often required)
Hides app from search/notifications	Yes	No	Rarely
Requires third-party software	No	No	Yes
Cost	Free	Free	Often paid
Security level	High	High	Variable
iOS version requirement	iOS 18+	Varies	Varies

Using Screen Time as an Alternative Lock Method

If you're running an older version of iOS that doesn't support native Face ID app locking, Screen Time offers a workaround. It locks apps behind a passcode rather than Face ID directly, but it's an effective barrier.

Steps to Lock Apps with Screen Time

1. Open Settings > Screen Time.
2. Tap App Limits > Add Limit.
3. Choose the app category or specific app.
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 the 1-minute limit expires, opening the app requires the Screen Time passcode. It's not Face ID, but combined with biometric device unlock, it adds a meaningful layer.

Pros and Cons of Locking Apps with Face ID

Pros

• Adds a second layer of security beyond your device passcode
• Fast and seamless authentication — no typing required
• Hides sensitive content from notifications and search
• Prevents casual snooping by family, friends, or coworkers
• Protects data if your unlocked phone is lost or stolen
• Free and built directly into iOS

Cons

• Slight friction opening frequently used apps
• Face ID can fail with masks, glasses, or poor lighting
• Requires iOS 18+ for the best native experience
• Doesn't protect against sophisticated remote attacks
• Some apps don't fully integrate with the native locking system

Best Practices for iPhone App and Photo Security

Locking apps with Face ID is powerful, but it works best as part of a broader security strategy. Here are additional steps to strengthen your privacy:

1. Use a strong alphanumeric passcode. A 6-digit numeric passcode is far weaker than an alphanumeric one. Go to Settings > Face ID & Passcode > Change Passcode > Passcode Options > Custom Alphanumeric Code.
2. Enable Stolen Device Protection. This iOS 17.3+ feature requires Face ID for sensitive actions when your phone is away from familiar locations.
3. Turn on two-factor authentication for your Apple ID and other important accounts.
4. Keep iOS updated. Security patches close vulnerabilities that could bypass Face ID protection.
5. Review app permissions regularly. Revoke access to Photos, Contacts, and Location for apps that don't genuinely need it.
6. Use encrypted messaging apps like Signal for sensitive conversations.
7. Be cautious with shortened links. When sharing sensitive URLs, use a reputable shortener like Lunyb that offers privacy-focused link management without harvesting user data.

Troubleshooting Common Face ID Locking Issues

The 'Require Face ID' Option Doesn't Appear

Ensure you're running iOS 18 or later. Go to Settings > General > Software Update to check. If you're on iOS 17 or earlier, use in-app Face ID settings or Screen Time as workarounds.

Face ID Keeps Failing

Reset Face ID by going to Settings > Face ID & Passcode > Reset Face ID, then re-enroll. If problems persist, consider adding an alternate appearance (glasses, different lighting).

Locked App Still Shows Notifications

When you enable Face ID lock via long-press, notification content should be automatically hidden. If not, go to Settings > Notifications > [App] and set Show Previews to When Unlocked or Never.

Can't Find a Hidden App

Hidden apps live in the Hidden folder at the bottom of your App Library. Swipe left past all Home Screen pages, scroll to the bottom, and tap Hidden to authenticate.

Related Reading

If you're interested in broader digital privacy and security topics, check out our guides on Lunyb's approach to secure link sharing and the best URL shorteners for 2026, which cover privacy-forward tools for managing your online presence.

Frequently Asked Questions

Can I lock any app with Face ID on iPhone?

Yes, if you're running iOS 18 or later, you can lock virtually any app — including third-party apps — by long-pressing the app icon and selecting Require Face ID. On earlier iOS versions, you're limited to apps that offer built-in Face ID locks in their own settings.

Does locking an app with Face ID hide its notifications?

Yes. When you require Face ID for an app in iOS 18+, its notification previews, search results, and shared content suggestions are automatically hidden. Notifications may still appear as generic alerts, but no sensitive content is exposed.

What happens if Face ID fails on a locked app?

If Face ID fails multiple times, you'll be prompted to enter your device passcode as a fallback. This ensures you're never locked out of your own apps, while still preventing unauthorized access by someone who doesn't know your passcode.

Can someone bypass Face ID app locks with my passcode?

Yes, entering your device passcode will bypass the Face ID requirement for locked apps. This is why using a strong alphanumeric passcode and enabling Stolen Device Protection (iOS 17.3+) is critical — those features add extra verification steps for sensitive actions.

Are third-party app lockers safe to use on iPhone?

Most reliable third-party app lockers require jailbreaking, which introduces significant security risks. The safest approach is to use Apple's native iOS 18 locking feature or the in-app Face ID options offered by trusted apps like WhatsApp, Signal, and banking apps.