Samsung Galaxy S3 SC-06D docomo Instruction Manual page 295

Setting unlock method for the
screen lock
You can set to require unlock operation which
specifi ed in advance to unlock the screen lock.
1
From the Home screen,
"Settings" → "Security" → "Screen
lock"
2
Select unlock method → Enter
according to onscreen instructions
• Set "PIN" with 4 or more numbers; set
"password" with 4 or more characters
including alphabets.
293
→
Settings