In order for you to start using your Samsung Galaxy S8, you must first know how to lock and unlock the device. Locking the device allow you to save power while the screen is switched off and help prevent you making accidental phone call. The screen will automatically locks when the set time is run out.

Here's how you can lock and unlock the screen:

1. To lock the device, simply press on the Power button.

2. To unlock the device you can press on the Power button, or double press on the Home key and drag the finger across the screen, this will activate the screen and allow you to gain access to the device.

 

 
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