I just bought my iPhone 3G S last Saturday and ever since I've noticed that my battery only last hardly 1 day and 6/7 hours (take into consideration the fact that I've been downloading apps and using Safari quite a bit). I was just wondering how to increase the battery life besides decreasing the brightness of the screen, etc. Also I recently purchased a clear case (forgot what brand; its the case that doesn't include the clear film screen protector) and I noticed that the back of the case (before I put it on my iPhone) was completely scratched up. Will Apple exchange/refund my money back for it if I take it in a week later from the date of purchase?