I was in a menu and changed a setting a few days ago and now can't find it....driving me crazy. I thought it was in the Security settings. It was an option to change the time after the display screen goes dim where you could push the power button or home button and "recover" the screen without unlocking it. I think the settings were from a few seconds to up to 30 minutes. I changed mine to 30 seconds. This way if the screen goes black you have more than a couple of seconds to get it back without unlocking. I have checked everywhere and can't find that option now. Thanks for the help!