Disable or deactivate Device Security (Smart Manager)

Device: S7 Edge (SM-G930FD)

Android version: 6.0.1 Marshmallow

Scenario: Accidentally activated the Device Security and not able to deactivate anywhere in Smart Manager app.

Instructions to deactivate:

1. Open the app drawer and select Settings --> Applications --> Application manager


2. Click MORE menu on right top --> Show system apps


3. Search for "COM.SAMSUNG.ANDROID.SM.DEVICESECURITY" and tap


4. Tap the "CLEAR CACHE" following by "CLEAR DATA" (confirm the DELETE if warning prompted)