That little round button under the screen... I know it is used to take pictures... And as a little kinda scroll cursor of sorts... But is that it? My day dream thought of the morning was how slick it would be if that little round button could be set as the lock/unlock button instead of, or along with the upper left shoulder button! Just to light the screen up, or put it to sleep. I still like the slide lock on thre screen to lock/unlock, answer/reject calls. Is there an app that does this? Is there already somewhere in the settings to do this? (without rooting... I am no where near techy savvy enough to dive into that action!) Anyone else think that would be a really functional user friendly app?