I've been playing with my camera today, and finally figure out how to take decent pix, but after scrolling through my album, I tried to go to the camera again, but now everytime I try the screen is black. And it stays black even after I remove my battery. A few times, I couldn't even get to home--the screen just stayed black. Now it's still black when I go to the camera, but at least I can access home without having to remove my battery. I called Bestbuy and they said I can exchange, but I'm afraid I might get one with a messed up GPS. :-( Will Bestbuy fix it or make me exchange? Will Sprint fix it even though I'm still in my 30-day trial?