I have a sealed iPhone I purchased from the apple store which I bought for work which I'm getting rid of because I never used it. While I was trying to sell it, a lot of people asked me for the unlock status and the IMEI number. So I tried entering the IMEI number to see if I could provide the information they were looking for and when I used multiple sites, it showed that the IMEI number is invalid. What gives? Why is the factory unlocked iPhone I bought from the LA's Apple store showing up as invalid?