How to Enable Auto Blocker for Enhanced Security on Samsung Galaxy Devices

Discover how to activate and manage the Auto Blocker feature on Samsung Galaxy devices running One UI 6.1.1 and later for improved security against unauthorized apps, USB threats, and malware.

The Auto Blocker feature on Samsung Galaxy devices running One UI 6.1.1 and later enhances security by blocking unauthorized app installations, USB-based threats, and malicious content. Learn how to enable, configure, and troubleshoot this feature for optimal protection.

1. What Is the Auto Blocker Feature?

The Auto Blocker feature is a security tool available on Samsung Galaxy devices with One UI 6.1.1 and later. It protects your device by:

- Blocking apps from unauthorized sources like third-party APK files.

- Preventing malicious USB commands from unauthorized devices.

- Blocking malware-laden images in messaging apps.

- Stopping unauthorized software updates via USB connections.

2. Supported Samsung Galaxy Devices

The Auto Blocker feature is available on the following Samsung Galaxy devices:

- Galaxy S24, S25, S26 series

- Galaxy Z Fold and Z Flip series

- Galaxy A series (models with One UI 6.1.1 or later)

3. How to Enable Auto Blocker

1. Open the Settings app on your Samsung Galaxy device.
2. Go to Security and Privacy.
3. Select Auto Blocker.
4. Toggle the switch to turn on the feature.

4. Why Use Maximum Restrictions?

For enhanced security, you can enable Maximum Restrictions within Auto Blocker. This adds additional protections, including:

- Blocking device admin apps and work profiles.

- Preventing auto-downloading of message attachments.

- Blocking hyperlinks and image previews in messages.

- Removing location data when sharing photos.

- Blocking shared album invitations from unknown sources.

5. How to Enable Maximum Restrictions

1. Open Settings and navigate to Security and Privacy.
2. Select Auto Blocker.
3. Tap Maximum Restrictions and enable the feature.

6. Common Issues and Solutions

- If an app from an unauthorized source fails to install, temporarily disable Auto Blocker and try again.

- If work apps or profiles don't install, ensure Auto Blocker is disabled during installation.

- For devices upgrading to One UI 6.1.1, the Auto Blocker setting remains unchanged unless manually adjusted.

Related Samsung Support Topics

- How to Free Storage Space on Samsung Galaxy Devices

- How to Use Smart Switch on Samsung Galaxy Phones

- How to Clear Cache Files on Samsung Galaxy Devices