This may have been asked before but how do you keep the screen from going dim or off completely when you using apps? The only app that seems to keep the screen from going dim is Navigation. If I use an app like Google Maps it goes dim and then dark at the set time. I would like it to stay on specifically when it's got the charger hooked to it. It will only go dim with the charger on but I'd like it to stay bright. Or do I have to change my setting to "never turn off" everytime I want it to stay on? Thanks.