So I had a problem with my iPhone 5's sleep button not working, brought it to the store, and was given a replacement phone, but it seems noticeably heavier. Maybe I'm just going crazy, but I wanted to see if anyone had similar experiences of if maybe the refurb parts aren't exactly the same or as light as the new parts. If I had a mail scale I would weigh it myself but I don't, but I will compare with others when I next go to an Apple Store.