Want to lock apps without downloading extra software? Learn how to use built-in tools on Samsung, Xiaomi, OnePlus, and other Android phones to secure your apps with passwords or biometrics – no third-party apps required.
Why Lock Apps on Android?
Your smartphone contains plenty of personal information, including images, bank accounts, social network profiles, and private messages. Locking specific apps provides an additional layer of security, particularly when sharing your device or preventing unintentional snooping.
Most people jump straight to third-party app lockers. But these:
- May ask for invasive permissions
- Show ads or collect data
- Drain battery and storage
That’s why using built-in features is often the smarter, safer move.
Samsung Devices (One UI) – Use Secure Folder
Samsung includes a powerful privacy tool called Secure Folder, protected by Samsung Knox.
How to use:
- Open Settings
- Tap Biometrics and security
- Select Secure Folder and sign in with your Samsung account
- Set up a lock type (PIN, password, fingerprint, etc.)
- Add apps or files to your Secure Folder
Bonus Tip: You can also hide the Secure Folder icon from the app drawer to keep it totally invisible.
Xiaomi / Redmi / POCO Devices (MIUI) – Use App Lock
MIUI has a built-in App Lock feature that is super easy to set up.
Steps:
- Open Settings
- Go to Apps > App Lock
- Set a privacy password (or use your existing phone lock)
- Choose which apps to lock
- Optionally enable fingerprint unlock for convenience
This works for apps like WhatsApp, Facebook, Instagram, Gmail, and more.
OnePlus Devices (OxygenOS) – Use App Locker
OnePlus provides App Locker, a native feature that locks your apps and hides their notifications.
How to enable:
- Open Settings
- Scroll to Utilities > App Locker
- Tap Add Apps and select the apps you want to lock
- Enable Fingerprint Unlock for fast access
- Toggle Hide Notification Content to prevent preview leaks
App Locker can even keep apps locked in the background, offering persistent protection.
Realme / Oppo Devices (ColorOS) – Use App Lock
These brands offer similar features under the Privacy menu.
Steps:
- Go to Settings > Privacy > App Lock
- Set a privacy password (separate from your phone unlock)
- Select apps you want to lock
- Enable Face or Fingerprint Unlock
You’ll be asked for verification each time the app is opened.
Huawei / Honor Devices (EMUI) – Use App Lock
Huawei’s App Lock is baked into the EMUI interface.
To set it up:
- Open Settings
- Tap Security & Privacy > App Lock
- Set a password
- Select apps to protect
This feature integrates well with fingerprint unlock, so you won’t have to type the password every time.
Your phone does not have App Lock?
If your phone’s Android version or manufacturer doesn’t include app locking, here are a few alternatives:
- Screen Pinning: Locks your phone to one app.
- Settings > Security > Screen Pinning
- Useful for letting kids watch YouTube without leaving the app
- Multiple Users / Guest Mode:
- Settings > System > Multiple Users
- Create a guest profile for others using your phone
- Trusted Third-Party Apps (as a last resort):
If you go this route, always read reviews and limit permissions.
Pro Tips to Enhance App Security
- ✅ Enable biometric unlock for locked apps
- ✅ Hide notification previews (especially for messaging and banking apps)
- ✅ Use Strong screen locks (PIN, pattern, or fingerprint)
- ✅ Keep your phone’s software updated for security patches
- ✅ Be cautious about sharing your device or leaving it unlocked
Locking apps without third-party apps is easier, more effective, and safer than you might expect. Whether you utilize Samsung’s Secure Folder, Xiaomi’s App Lock, or OnePlus’ App Locker, you can protect your important data with a few touches.
So, before you download another app, check your phone’s settings as you may already have all you need to keep your digital life private and secure.
