Samsung BN59-01012A 用户手册

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页码 253
Getting started
21
Locking and unlocking the device
Pressing the Power button turns off the screen and puts the device into lock mode. The 
device automatically gets locked if it is not used for a specified period.
To unlock the device, press the Power button or the Home button and flick your finger in any 
direction within the unlock screen area.
You can change the unlock code to unlock the device. Refer to 
 for details.