Samsung Galaxy S6 Edge: How to Set Power Key as Screen Lock Key in Android 5.1.1 Lollipop

If you'd like to easily lock the screen without you have to wait the screen automatically turns off and the screen lock delay period ends, you can set the Power key as the screen lock key so that your phone will instantly lock the screen when you press this key. You can do this if you use one of the screen lock types with the security lock feature, e.g., pattern, direction lock, PIN, password, or