i just got my 9900 and after few days using it i realized that whenever i take a picture there is always a white/colored (light colored) horizontal line. it appears only in native camera/video camera and all the resulting picture. however, the line does not show on any other screen (home screen, black background etc).
some says its software issue, is this true (i upgraded to 7.0.0.317 and the line still exist)
It appears that there is an issue with the camera lens itself or some circuits in the camera. The device should be under warranty and since it's fairly new they should not offer you refurbished devices. Go for a replacement.