Samsung GT-I9235 - Securing the Device

Basics
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Securing the device
Prevent others from using or accessing personal data and information stored in the device by
using the security features. The device requires an unlock code whenever unlocking it.
Setting a face unlock
Open the device, and on the Applications screen, tap Settings
→
My device
→
Lock screen
→
Screen lock
→
Face unlock .
Fit your face in the frame to be captured. Then, set a backup unlock PIN or pattern to unlock
the screen in case the face unlock fails.
Setting a face and voice unlock
Open the device, and on the Applications screen, tap Settings
→
My device
→
Lock screen
→
Screen lock
→
Face and voice .
Fit your face in the frame to be captured and then set a voice command. Then, set a backup
unlock PIN or pattern to unlock the screen in case the face and voice unlock fails.
Setting a pattern
On the Applications screen, tap Settings
→
My device
→
Lock screen
→
Screen lock
→
Pattern .
Draw a pattern by connecting four dots or more, and then draw the pattern again to verify it.
Set a backup unlock PIN to unlock the screen when you forget the pattern.