I just got the 4S and looking to unload my iPhone 4. There are tons of sites that claim to pay cash for the phones. Has anyone used them? Has anyone seen reviews about which ones are legit? https://www.google.com/search?q=cash+for+iphone Each will quote you a price depending on condition of the phone. But I don't want to send in my phone to highest bidder and have them tell me that it's in worse condition than I self reported and get screwed on price.