I am planning to buy iPhone 4S soon and on ebay / craisglist i see that many people are selling replacement iPhones as new. Now i am not aware about what apple gives as replacement, whether they are actual brand new piece or a refurbished phone ? But i just want to be sure before i fall for such a phone where the user claims it as replacement from apple. Also are the apple refurbished ones as good as new ? What sort of refurbishing apple does before handing over the phone as replacement to a user ?