I used to want that too, instead of my 'black' kluge. For some reason, I became OK with 'black' instead of 'dimmed to zero'.<BR><BR>Back in the olden days, a piece of shareware called 'Sleeper' gave ...

Dimming your screen brightness is one of the most effective and straightforward ways to extend your smartphone's battery life. Here’s a detailed look at how adjusting your screen brightness can make a ...