I have to do a headache of a carrier switch with my family - doing it Wednesday and I'll be getting an iPhone 4s - I currently have a 4. What I have to pay with the contract is a little less than what I can probably sell my iPhone 4 for used - free of contact. I want to spruce up my iPhone's appearance so I can fetch as much money as I can for it. Its generally pretty clean, however on the front near the camera and phone speaker there are some specs that seem to be UNDER the coating. Is this possible? They're near the top of the phone so I wondered if something could have gotten in in between the silver casing strip and the "top" of the phone. How is the top portion of the phone constructed, can debris get inside? If so, is it just a matter of taking it apart? I have a Ipod tool - does the iPhone 4 use the same? And there are some specs on the rear of the case. Can I use super fine sandpaper to remove them?