Samsung EK-GC200 User Manual page 41

Basics
Setting a pattern
On the Applications screen, tap Settings
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.
Setting a PIN
On the Applications screen, tap Settings
PIN.
Enter at least four numbers, and then enter the password again to verify it.
Setting a password
On the Applications screen, tap Settings
Password.
Enter at least four characters including numbers and symbols, and then enter the password
again to verify it.
My device Lock screen
My device Lock screen
My device Lock screen
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Screen lock
Screen lock
Screen lock