On the Samsung Galaxy S6 the setting is activated that once you press and release the Power On / Off button, the lock screen of your smartphone is activated. This feature is designed to make the rapid Lock of your smartphone possible, without having to wait for the display time-out.
We want to tell you now how to disable on the Samsung Galaxy S6 the quick lock with the power button.
Navigate to: Menu --> Settings --> lock screen and security --> Secure Lock Settings
Here you now find the option "Lock instantly with power key". Slide the knob to set this feature from "active" to "inactive". Finished!
You can now no longer lock your phone by using the Power On/ Off button on the Samsung Galaxy S6.