The watermarks on both Otterboxs for my iPhone 3GS were terrible, I ended up removing the plastic covers & was happy with them. My iPhone 4 Otterbox, received 07/26/10, initially had a small watermark about 1 cm. in diameter that disappeared overnight the first night & has not returned. It is all very peculiar, the watermark on the 3GS lasted 3-4 weeks until i removed the plastic.so the otterbox for ip4 isnt supposed to have any watermarks? cause mine does.