I was driving in my car with my iPhone 3G and took a sharp turn, sending the phone sliding into a hard plastic panel of my car. After the incident the phone screen flickers white all the time, with horizontal white lines and the text and picture bounces up and down. I've reset the phone a few times and tried a few light slams, but it's not getting any better. Any suggestions or will it be this way unless I get a new one? =/