Perhaps this is common knowledge but I just stumbled across this while scrolling through Cydia. It gives you a brightness slider on the screen when you push the volume button. I have the slider with Auxo and NCsettings but this is just easier. Example, the other day I was out and about and my phone decided it was going to dim itself too much to see the screen. I tried to find both of those sliders on a dark screen but had no idea where they were. It didn't help that I was driving but this will be much easier to find should this ever happen again.