Samsung Lockdown Mode: Power Menu Trigger in One UI

Lockdown Mode in Samsung One UI is a security feature that, when enabled, disables biometric unlocking (fingerprint, face, iris) and Smart Lock, forcing you to use your PIN, pattern, or password to unlock the phone. The trigger is located in the power menu, which you can access by pressing and holding the Side and Volume Down buttons simultaneously. This article explains exactly how to add and use the Lockdown Mode shortcut in One UI, what it does, and how it differs from similar features.

Background: Why Lockdown Mode Exists

Lockdown Mode was introduced in Android 9 (Pie) as a standard Android feature, and Samsung integrated it into One UI. Its purpose is to provide a quick way to temporarily disable biometric authentication and Smart Lock. This is useful in situations where someone might try to force you to unlock your phone with your fingerprint or face — for example, at a border crossing, during a traffic stop, or if your phone is stolen while you are asleep (since your face or fingerprint could be used without your conscious consent). When Lockdown Mode is active, the phone only accepts your PIN, pattern, or password, and it also hides notifications on the lock screen until you unlock it.

How to Enable Lockdown Mode in the Power Menu

In One UI (version 3.0 and later), the Lockdown Mode option is not visible in the power menu by default. You must first add it to the power menu settings. Here’s how:

1. Open the Settings app on your Samsung device.
2. Scroll down and tap Biometrics and security (or Security and privacy on some One UI versions).
3. Tap Other security settings.
4. Find and toggle on Show Lockdown option (or Add Lockdown to power menu). The exact wording may vary slightly by One UI version.

Once enabled, pressing and holding the Side and Volume Down buttons together will bring up the power menu, which now includes a Lockdown button. Tap it to activate Lockdown Mode immediately.

What Lockdown Mode Actually Does

When you activate Lockdown Mode, the following changes occur on your Samsung device:

• Biometric unlocking is disabled: Fingerprint, face recognition, and iris scanning (on older models) will not work.
• Smart Lock is temporarily disabled: Any trusted devices, places, or on-body detection that would normally keep your phone unlocked are ignored.
• Notifications are hidden on the lock screen: You will only see that you have notifications, but not their content, until you unlock with your PIN, pattern, or password.
• Bixby voice wake-up is disabled: Saying “Hi Bixbyâ€� won’t unlock or respond while Lockdown Mode is active.

Lockdown Mode does not turn off the phone, restart it, or enter a “safe mode.� It simply locks the device with the highest security level available.

How to Turn Off Lockdown Mode

To exit Lockdown Mode, you simply unlock your phone using your PIN, pattern, or password. After that, the phone returns to normal behavior — biometrics and Smart Lock become active again. There is no separate “off� switch; unlocking is the only way out.

Common Problems and Fixes

Some users report that the Lockdown option does not appear even after toggling it on. Here are a few things to check:

• One UI version: The option is only available in One UI 3.0 and later. If you are on an older version, update your phone via Settings > Software update.
• Device compatibility: Some budget Samsung phones may not include the option. If you cannot find it, your device may not support it.
• Power menu gesture: Make sure you are pressing the correct buttons. On most Samsung phones, it’s the Side (power) and Volume Down buttons held simultaneously for about a second. If you have a Bixby key on older models, that may be the side button.
• Custom launchers: Third-party launchers can sometimes interfere with the power menu. Try switching back to the default One UI launcher temporarily to see if the option appears.

Lockdown Mode vs. Power Off vs. Emergency Mode

It’s easy to confuse Lockdown Mode with other power menu options. Here’s a quick comparison:

• Power Off: Turns the phone completely off. When you turn it back on, it requires your PIN/password (if you have secure startup enabled), but it also takes time to boot.
• Emergency Mode: A Samsung feature that extends battery life and provides quick access to emergency contacts and tools. It does not disable biometrics.
• Lockdown Mode: Disables biometrics and Smart Lock while keeping the phone on and ready to unlock with your PIN/password.

If you are in a situation where you need to quickly prevent someone from using your biometrics, Lockdown Mode is the fastest option — it takes about two seconds to activate.

Frequently Asked Questions

Does Lockdown Mode turn off the phone?

No, it does not. It only locks the screen and disables biometric unlocking. The phone stays on, so you can still receive calls and notifications (though their content is hidden).

Can I still use the camera in Lockdown Mode?

Yes, you can still access the camera from the lock screen, but you cannot view any photos or other data until you unlock the phone with your PIN/password.

Will Lockdown Mode disable the fingerprint sensor permanently?

No, it only disables it until you unlock the phone once with your PIN/password. After that, the fingerprint sensor works normally again.

Why is Lockdown Mode not showing in my power menu?

Most likely you haven’t enabled the option in Settings > Biometrics and security > Other security settings > Show Lockdown option. If it’s already on and still missing, your device may be running an older One UI version or the feature may not be supported on your model.

Can I set up a quick shortcut to Lockdown Mode without the power menu?

On some One UI versions, you can add a Lockdown tile in the quick settings panel. Swipe down twice from the top, tap the three-dot menu, then edit buttons and drag the Lockdown icon into your quick settings. This gives you one-tap access without holding the power button.

Does Lockdown Mode hide all notifications?

Yes, it hides the content of all notifications on the lock screen. You will see icons indicating new notifications, but you cannot read them until you unlock with your PIN/password.

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