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

Your iPhone holds more personal data than your wallet, journal, and filing cabinet combined. Locking individual apps and photos with Face ID adds a powerful second layer of protection — so even if someone has your unlocked phone in hand, they can't open your banking app, peek at private photos, or read your messages. This guide walks you through every method available in iOS 18 and later, plus practical tips for keeping your most sensitive content truly private.

Why Lock Apps and Photos with Face ID?

Face ID app and photo locking is a feature that requires biometric authentication (your face) before specific apps open or before hidden photo albums become visible. It protects you from casual snoopers, lost-phone scenarios, and situations where you hand your unlocked device to a friend or child.

Common reasons people enable per-app locking:

• Preventing partners, kids, or coworkers from opening private chats
• Shielding financial apps from shoulder-surfers in public
• Keeping personal photos hidden when showing your screen to others
• Adding protection if your phone is stolen while unlocked
• Meeting workplace compliance requirements for sensitive apps

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

Starting with iOS 18, Apple built native app locking directly into the operating system. You no longer need third-party tools to lock most apps.

Step-by-Step: Locking an App

1. Find the app icon on your Home Screen or App Library
2. Touch and hold the icon 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 enable the lock

From now on, every time you tap that app, you'll need to glance at your phone to open it. Notifications from the locked app will also be hidden from the Lock Screen and Notification Center — only generic alerts appear.

How to Unlock or Remove App Lock

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

How to Hide an App Entirely

Hiding goes one step further than locking — the app disappears from your Home Screen, search, Siri suggestions, and most system surfaces. It only lives in a dedicated "Hidden" folder at the bottom of your App Library.

1. Long-press the app icon
2. Choose Hide and Require Face ID
3. Confirm in the popup
4. Authenticate with Face ID

To access hidden apps, open App Library, scroll to the bottom, and tap the Hidden folder. Face ID authentication is required to reveal the contents.

Apps You Can and Can't Lock

Not every app supports locking or hiding. Apple has rules about which apps stay visible for system stability.

Category	Can Lock?	Can Hide?
Third-party apps (WhatsApp, Instagram, banking)	Yes	Yes
Most built-in Apple apps (Notes, Mail, Photos)	Yes	Yes
Phone, Messages, FaceTime	Yes	No
Settings, Camera, Clock	No	No
App Store	Yes	No

How to Lock Photos with Face ID

The Photos app has two layers of privacy: the Hidden album and the Recently Deleted album. Both are locked by default in iOS 16 and later, requiring Face ID to view.

Move Photos to the Hidden Album

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

Hidden photos disappear from your main library, Memories, Featured Photos, and shared albums.

Verify Face ID Is Required for the Hidden Album

1. Open Settings
2. Scroll to Apps > Photos
3. Make sure Use Face ID is toggled on
4. Also confirm Show Hidden Album is enabled (otherwise the album won't appear at all)

Access the Hidden Album

1. Open Photos and scroll to the bottom
2. Under Utilities, tap Hidden
3. Authenticate with Face ID to view the contents

Lock the Entire Photos App

If you want everything in your library protected — not just hidden items — lock the whole Photos app using the iOS 18 method:

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

Now anyone trying to open Photos must pass Face ID. Combined with the Hidden album, this gives you two layers of biometric protection for your most sensitive images.

Locking Specific App Features (Without iOS 18)

If you're on an older iPhone that can't run iOS 18, many apps include built-in Face ID locks. Here's where to find them in popular apps.

WhatsApp

1. Open WhatsApp > Settings
2. Tap Privacy > Screen Lock
3. Toggle on Require Face ID
4. Choose how quickly to require authentication (immediately, after 1 minute, etc.)

Signal

1. Open Signal > Settings (tap your profile picture)
2. Tap Privacy
3. Toggle Screen Lock on

Notes

Apple Notes lets you lock individual notes with Face ID:

1. Open a note
2. Tap the share/more icon in the top-right
3. Choose Lock
4. Use your device passcode (with Face ID unlocking it thereafter)

Banking and Finance Apps

Almost every major banking app — Chase, Wells Fargo, Revolut, Wise, PayPal — supports Face ID login natively. Check the security settings inside each app to enable it.

Comparing Locking Methods

Method	Best For	Notifications Hidden?	iOS Version
Long-press > Require Face ID	Most apps system-wide	Yes	iOS 18+
Hide and Require Face ID	Apps you rarely use	Yes	iOS 18+
In-app Face ID setting	Specific apps on older iOS	Varies	iOS 14+
Hidden Photos album	Sensitive images	N/A	iOS 16+
Screen Time restrictions	Parental controls	No	iOS 12+

Using Screen Time as a Backup Lock

Before iOS 18, the most common workaround was Screen Time. It still works as a fallback if you want to block apps without requiring Face ID on every launch.

1. Open Settings > Screen Time
2. Tap App Limits > Add Limit
3. Choose an app category or specific app
4. Set the limit to 1 minute
5. Enable Block at End of Limit
6. Set a Screen Time passcode different from your device passcode

After one minute of daily use, the app locks behind your Screen Time passcode. It's clunky compared to native Face ID locking but works on older devices.

Privacy Best Practices Beyond App Locking

Locking apps is just one piece of a complete privacy strategy. Pair it with these habits:

Strengthen Your Device Passcode

Face ID is only as strong as the passcode behind it. Use a six-digit numeric code at minimum, or better — a custom alphanumeric passcode. Avoid birthdays and repeating digits.

Enable Stolen Device Protection

In Settings > Face ID & Passcode > Stolen Device Protection, turn this feature on. It adds a one-hour security delay before sensitive changes can be made if your iPhone is away from familiar locations.

Audit App Permissions Regularly

Go to Settings > Privacy & Security and review which apps have access to your location, photos, microphone, and contacts. Revoke anything unnecessary.

Be Careful With Shared Links

When you share screenshots or links from locked apps, the destination URL can leak information about your habits. Using a privacy-respecting link shortener like Lunyb lets you share clean, branded short links without exposing tracking parameters or original URLs. For a deeper look at how Lunyb handles user data, see our honest Lunyb review.

Use Encrypted Messaging

Combine app locks with end-to-end encrypted messengers like Signal or iMessage so even your conversations in transit are protected.

Troubleshooting Face ID App Lock Issues

Face ID Keeps Failing

Clean the TrueDepth camera at the top of your screen, then re-scan your face in Settings > Face ID & Passcode > Reset Face ID. Set up an alternate appearance for low-light conditions.

The "Require Face ID" Option Is Missing

This feature requires iOS 18 or later. Update your device via Settings > General > Software Update. Older iPhones (iPhone X and below) may not receive iOS 18.

App Still Opens Without Authentication

Force-close the app fully by swiping it away in the App Switcher, then reopen. Some apps cache an authenticated session for a few minutes.

Hidden Album Doesn't Appear

Go to Settings > Apps > Photos and make sure Show Hidden Album is enabled. If it's off, the album exists but is invisible everywhere.

What to Do If Face ID Fails Repeatedly

After five failed Face ID attempts, your iPhone falls back to the device passcode. This is by design — biometrics aren't infallible, and a strong passcode remains the ultimate gatekeeper. Make sure no one else knows it.

If you're concerned about someone forcing you to look at your phone, you can quickly disable Face ID by pressing and holding the Side button + Volume Up for two seconds. This forces a passcode requirement on the next unlock attempt.

Further Reading

If you're interested in broader online privacy and security tools, check out our 2026 buyer's guide to URL shorteners — many of the same privacy principles (data minimization, encrypted connections, transparent logging) apply to every tool you use online.

FAQ

Can I lock the Camera or Settings app with Face ID?

No. Apple blocks Face ID locking for a small list of system-critical apps including Camera, Settings, Clock, Find My, and Phone (Phone can be locked but not hidden). This ensures you can always reach essential functions in emergencies.

Do locked apps still receive notifications?

They receive notifications, but the content is hidden. You'll see a generic "Notification" alert instead of the message preview, sender, or details. This protects you from screen-peeking even when your phone is locked.

What happens to locked apps when I back up my iPhone?

The lock setting is stored locally and is preserved in encrypted iCloud and iTunes backups. When you restore to a new iPhone, your locked-app preferences carry over, though you may need to re-authenticate to confirm them.

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

No. The lock persists across restarts. After a reboot, your device passcode is required before Face ID becomes active again — and the app lock remains enforced until you explicitly remove it.

Is third-party app locking software still necessary?

For most users on iOS 18 or later, no. Apple's native implementation is more secure and better integrated than any third-party tool. Avoid apps that claim to lock other apps via Shortcuts or Guided Access workarounds — they're easy to bypass and may collect your data.