So, I just got a clock app for my iPhone that has a really nice interface and I'd like to use it as my clock at night. My roommate says if I leave it on all night like that (the clock has an option to keep the iphone from screen saving) I'll burn out the back light part quicker. I noticed the clock has a feature that you can dim the display by swiping it and it appears you can dim it to the point of no display (like when you put the dim switch to 0)? I just looked closely and it does still display a little bit but you can't tell unless you look closely (Even at night) it's so dim. Anyways, I'm wondering if I kept it that dim (except for swiping it when I wanted to look at it), would that be much of a toll on the backlighting on the phone? And how many of you who have had iphones for a while use yours as a clock regularly and have you had issues with the backlight burning out?