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

Your iPhone holds an extraordinary amount of personal data: private conversations, banking apps, medical records, and photos you'd rather nobody saw when they borrow your phone to "check something quickly." The good news is that Apple has quietly built powerful tools into iOS that let you lock apps and photos with Face ID — no third-party apps required. This guide walks you through every method, from Apple's newest per-app locking feature to hidden photo albums and advanced privacy tricks.

Why You Should Lock Apps and Photos with Face ID

Locking individual apps and photos with Face ID adds a second layer of biometric security on top of your device passcode. Even if someone knows your PIN or you hand your phone to a friend, sensitive apps and images stay sealed behind your face.

Common reasons users enable app-level Face ID protection include:

• Preventing kids or partners from accidentally opening banking or messaging apps
• Protecting private photos, screenshots, and documents from casual snooping
• Shielding health, dating, or journaling apps from anyone borrowing your phone
• Adding a barrier if your unlocked phone is lost or stolen briefly

Since iOS 18, Apple has made this dramatically easier by allowing you to require Face ID for any app on your device — a feature that used to require jailbreaks or workarounds.

Requirements Before You Start

Before locking apps and photos with Face ID, make sure you have:

1. An iPhone with Face ID (iPhone X or later)
2. iOS 18 or later installed (Settings → General → Software Update)
3. Face ID already configured (Settings → Face ID & Passcode)
4. A backup passcode set up in case Face ID fails

If you're on an older iOS version, some features will still work — Touch ID and passcode fallback have been supported for years — but the universal app lock requires iOS 18+.

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

Apple's built-in app lock feature lets you require Face ID authentication before any app opens. Here's the step-by-step process:

1. Unlock your iPhone and go to the Home Screen or App Library
2. Touch and hold the app icon you want to lock until the context menu appears
3. Tap Require Face ID (or Require Touch ID on older models)
4. Confirm by tapping Require Face ID again in the popup
5. Authenticate with Face ID to activate the lock

The app is now locked. Every time you open it, Face ID must succeed first. If Face ID fails, iOS falls back to your device passcode. Notifications from the locked app are also hidden — no preview text on the Lock Screen, no content in the notification center.

How to Unlock an App (Remove the Face ID Requirement)

To reverse the process:

1. Long-press the locked app icon
2. Tap Don't Require Face ID
3. Authenticate with Face ID to confirm

How to Hide Apps Completely Behind Face ID

Locking is good, but iOS 18 goes further: you can hide apps entirely so they don't appear on the Home Screen, in search results, in notifications, or anywhere else in the system.

1. Long-press the app icon
2. Tap Require Face ID
3. Select Hide and Require Face ID
4. Confirm by tapping Hide App

Hidden apps are moved to a locked Hidden folder at the bottom of your App Library. To access them:

1. Swipe left past your last Home Screen page to reach the App Library
2. Scroll to the bottom and tap the Hidden folder
3. Authenticate with Face ID to reveal the apps inside

This is ideal for dating apps, private journals, cryptocurrency wallets, or anything you don't want visible to someone glancing at your Home Screen.

Apps That Cannot Be Hidden

Apple restricts hiding for a few essential system apps, including Phone, Messages, Settings, Camera, and Find My. You can still require Face ID to open them, but they won't disappear from your device.

How to Lock Photos with Face ID

Photos are often more sensitive than the apps themselves. Fortunately, the Photos app has two dedicated privacy tiers built in: the Hidden album and the Recently Deleted album — both locked with Face ID by default since iOS 16.

Using the Hidden Album

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

The photo is moved to your Hidden album. To view it later, scroll to the bottom of the Photos app, tap Hidden, and authenticate with Face ID.

Making Sure the Hidden Album Is Actually Locked

Face ID protection for the Hidden album is on by default, but it's worth double-checking:

1. Open Settings
2. Scroll to Apps → Photos
3. Ensure Use Face ID is toggled on
4. Ensure Show Hidden Album is either off (to make it invisible entirely) or on with Face ID required

If you turn off Show Hidden Album, the album won't even appear in the Photos app — a nice touch if you don't want anyone to know hidden photos exist.

Locking the Entire Photos App

For maximum privacy, you can lock the entire Photos app using the iOS 18 method described earlier. Long-press the Photos icon, tap Require Face ID, and confirm. Now every photo on your device is behind biometric authentication.

Comparing Face ID Protection Methods

Here's a side-by-side comparison of the main ways to secure apps and photos with Face ID on iOS:

Method	What It Protects	Notifications Hidden?	Best For
Require Face ID on app	Individual app contents	Yes	Banking, messaging, health apps
Hide and Require Face ID	App visibility + contents	Yes (fully suppressed)	Dating apps, private journals
Hidden Album (Photos)	Specific photos/videos	N/A	Sensitive individual images
Lock entire Photos app	All photos and videos	Yes	Maximum photo privacy
Screen Time restrictions	App usage limits	No	Parental control setups

Alternative: Using Screen Time to Lock Apps

Before iOS 18, the most common workaround was Screen Time. It still works and offers passcode protection (separate from your device passcode), which can be useful in certain scenarios.

1. Go to Settings → Screen Time
2. Tap App Limits → Add Limit
3. Choose the app and set a 1-minute limit
4. Enable Block at End of Limit
5. Set a Screen Time passcode under Lock Screen Time Settings

Once the minute is used, the app is blocked until you enter the Screen Time passcode. It's clunkier than Face ID locking but still handy for shared family devices.

Locking Notes, Voice Memos, and Other Built-in Apps

Some Apple apps have their own internal locking features that predate iOS 18:

• Notes: Open a note → tap the share icon → Lock Note. You can choose Face ID or a custom password.
• Voice Memos: No built-in lock, but locking the entire app via the Home Screen method works.
• Files: No per-file Face ID, but you can lock the app or store sensitive files in an encrypted Notes attachment.

Advanced Privacy Tips Beyond Face ID

Locking apps is only one piece of a broader privacy strategy. A few additional habits will keep your data far safer:

1. Disable Lock Screen Access to Sensitive Features

Go to Settings → Face ID & Passcode → scroll to Allow Access When Locked. Turn off Control Center, Wallet, USB accessories, and notification previews if you want to minimize what a thief or snoop can access.

2. Turn On Stolen Device Protection

iOS 17.3 and later include Stolen Device Protection. When enabled, sensitive actions (changing your Apple ID password, viewing saved passwords) require Face ID with no passcode fallback and a one-hour security delay when you're away from familiar locations.

3. Use Private Browsing with Face ID

Safari's Private Browsing tabs are locked with Face ID by default in iOS 17+. If you close Safari and reopen it, you'll need to authenticate to see your private tabs again.

4. Be Careful with Link Sharing

Face ID locks your device, but the links you share travel far beyond your phone. When sending sensitive links — password resets, private documents, event invitations — use a link management tool that strips tracking parameters and gives you control over expiration. Services like Lunyb let you shorten URLs with privacy-forward defaults, so what leaves your locked device stays under your control. For a deeper look, read our honest Lunyb review or the 2026 buyer's guide to URL shorteners.

5. Review App Permissions Regularly

Go to Settings → Privacy & Security and audit which apps have access to your Photos, Contacts, Location, Microphone, and Camera. Face ID locks the door, but a leaky permission is an open window.

Troubleshooting Common Issues

Face ID Option Doesn't Appear in the Long-Press Menu

You're likely on an iOS version older than 18. Update via Settings → General → Software Update. If you're already on iOS 18+, restart the iPhone — the option occasionally fails to appear after major updates.

Face ID Keeps Failing

Check that your face isn't obstructed and that the TrueDepth camera is clean. Reset Face ID under Settings → Face ID & Passcode → Reset Face ID if issues persist.

Hidden Photos Still Appear in Search or Widgets

Hidden photos should not appear in Memories, Featured Photos, widgets, or search — but they may still surface in third-party apps that have Photos access. Revoke access in Settings → Privacy & Security → Photos, or grant only Selected Photos.

Locked App Still Shows Notification Content

Double-check that the app is actually locked (long-press to confirm) and go to Settings → Notifications → select the app → set Show Previews to When Unlocked or Never.

What About Android Users?

Android doesn't have Face ID specifically, but most modern Android devices support fingerprint or face unlock for app locking through native features (Samsung's Secure Folder, Xiaomi's App Lock, OnePlus's App Locker) or through Google's built-in Private Space feature in Android 15. The principles are the same: lock sensitive apps, hide private galleries, and audit permissions.

Frequently Asked Questions

Can I lock any app on iPhone with Face ID?

Yes. On iOS 18 or later, you can lock virtually any app on your iPhone with Face ID by long-pressing the app icon and choosing Require Face ID. A few core system apps (like Settings and Phone) can be locked but not hidden.

Does locking an app with Face ID hide its notifications?

Yes. When an app requires Face ID, iOS automatically suppresses notification previews and content on the Lock Screen and in the notification center. You'll see that a notification exists but not what it says.

Are hidden photos really private?

Photos in the Hidden album are locked behind Face ID by default and don't appear in Memories, widgets, or search. However, third-party apps with Photos access may still see them. For maximum privacy, grant apps Selected Photos access only, or lock the entire Photos app.

What happens if Face ID fails when opening a locked app?

iOS falls back to your device passcode. If both fail multiple times, the app remains locked. This is the same behavior as unlocking your device itself.

Can someone bypass Face ID app locks by restarting the phone?

No. The Face ID requirement persists across restarts, updates, and app relaunches. The only way to remove it is to long-press the app and select Don't Require Face ID, which itself requires Face ID authentication.

Do locked apps still run in the background?

Yes. Background refresh, location services, and notifications still function normally — Face ID only gates the visual contents of the app when you open it. If you want to stop background activity, disable Background App Refresh in Settings.

Final Thoughts

Locking apps and photos with Face ID transforms your iPhone from a device where a single passcode guards everything into a layered fortress where sensitive content sits behind its own biometric door. With iOS 18 and later, Apple has made this process trivially easy — a long-press and a tap is all it takes. Combine app locking with hidden photo albums, Stolen Device Protection, and mindful permission management, and your iPhone becomes one of the most privacy-respecting devices you own. Take five minutes today to lock the three or four apps that matter most; your future self will thank you the next time someone borrows your phone.