Hi, firstly sorry for my bad English if it causes any misunderstandings. I've got an iPhone 3Gs and it seems to be pretty good. However I experience that the dust can penetrate the rubber frame lying between the screen and the metal border. Then I use the edge of a piece of paper (surely it's extremely thin) to remove those stuffs. The problem is that after the dusty removal, the rubber frame seem not to tightly attach to the screen. There is likely a very thin gap between them. I question myself if this is a way for the dust to come in the inside screen or things like that. And any suggestion? Thank you very much!