Try this app called Gravity Screen. Coming from a Moto X the one thing I missed most was the active screen that turns on every time you flip the phone over. Gravity Screen does that and you'll never have to press the home button or power button again to turn on the phone. The downside is it seems to use some battery and for some that is not a good thing on the GS6. I just started using it today so I'm still trying to see just how much battery it uses and if I can live with it. Not having to ever press the home button again may outweigh the battery usage and when the screen turns on you just place your finger on the home button to unlock using the finger print scanner but you don't have to press the button.