I've reported issue with my phone on 09/01 and on 09/14 it was repaired. Service left a remark about replacing motherboard. In my case there was no damage done by the service just that on back camera lenses there is small amount of lets say "dust". What I want to say is that if you pay attention then you will see that the phone was opened and it will never look again as "brand new". Talked with service and they've said this is pure cosmetics and if there are no visible defects on photos then it's perfectly acceptable and don't require further service.
