I have had my L830 since Nov. 7 and have never used a case. So far, no problems. I've only dropped it one, its pointy corner landed on my toe. Good for the phone, but bad for my toe!!! The phone is so sleep and pleasant to hold, I didn't want to make it thicker by adding a case. So far the plastic looks fine, there are a few tiny scratches on the black metal but I don't mind. It's a machine that I use every day, after all, so I'm OK if it looks like I use it. I do you a screen protector and am glad that I do. In fact just yesterday the screen protector got a giant scratch in it - not sure how, I think I must have had my keys in the same pocket as my phone. If I hadn't had a protector, that would likely by a big scratch on the screen itself, and I would be broken hearted.