Android app locking depends heavily on the phone. Samsung usually uses Secure Folder, newer stock Android can use Private Space, and older phones may need a trusted third-party app locker. There is not one universal app-lock switch across all Android phones.
These steps apply to Android 12 through 15, including Samsung Galaxy and Android 15 phones with Private Space.
Does This Affect You?
Use this if you want a PIN, pattern, fingerprint, or hidden area before someone can open sensitive apps such as banking, messages, photos, or work apps.
Lock Apps on Samsung Galaxy
- Open Settings > Security and privacy > Secure Folder. Older phones may use Biometrics and security.
- Sign in with your Samsung account.
- Choose a Secure Folder lock, such as PIN, pattern, or fingerprint.
- Open Secure Folder.
- Tap Add apps and add apps you want protected.
- Use the Secure Folder copy for private activity.
Secure Folder creates a separate locked copy. The app in your normal app drawer remains accessible unless you remove or stop using that copy.
Use Private Space on Android 15 and Later
- Open Settings > Security and privacy.
- Tap Private Space.
- Tap Set up.
- Choose or add a Google account for the private space.
- Set a separate PIN, pattern, or password.
- Install or move apps into Private Space.
- Open it from the bottom of the app drawer, or hide it when locked if your phone offers that option.
Use a Third-Party App Locker Carefully
Older or budget phones without Secure Folder, S Secure, or Private Space may need an app locker from the Play Store. Choose one with recent updates and strong reviews, and be cautious with Accessibility permissions because app lockers often need broad access to detect app launches.
App Lock Notes
Samsung S Secure
In some regions, Samsung offers S Secure with a more direct lock-and-mask apps feature. Search the Galaxy Store if Secure Folder is not the behavior you want.
Notifications May Still Show
Locking an app does not always hide notification previews. Adjust notification privacy and lock screen sensitive-notification settings separately.
Separate Spaces Are Safer
Secure Folder and Private Space isolate apps and data rather than merely placing a pop-up lock over an app.
Sources
- Samsung Support: Use Secure Folder on your Galaxy phone
- Google Support: Set up Private Space on your Android phone
- Android Help Center: Protect apps with a separate lock