Samsung Galaxy J4+
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Turning use of phone lock code on or off
The phone lock code prevents others from accessing the contents of your phone (such as pictures and messages). When the phone lock code is turned on, it needs to be used every time you turn on your phone and when it has been in sleep mode.
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Lock screen.
Press Screen lock type.
Press Pattern.
Slide your finger across the screen to connect at least four points and press CONTINUE.
Repeat the selected phone lock code and press CONFIRM.
Press the indicator next to the required settings.
Press DONE.
Press Screen lock type and key in the current phone lock code.
Press None.
Press the Home key to return to the home screen.