I have the same case but mine was nothing physically damaged at all. It was just fine last night yesterday before sleeping. I just kept it aside as charging was over and in the morning after 30 min of charging , First have seen horizontal gray lines appearing after an hour ,first purple/pink dots on top left hand corner and slowly spread the entire screen. While I approached service center (hyderbad) they say it could have been pressed (even if you keep in jeans pant, that kind of pressure also could be a issue), I said nothing like that happened. Now even to do entry level screening they said that test may broke your glass so you should be ready to buy a glass which may costs around 8500. This is pathetic, I should have bought cheap smart phone.
I lost confidence in Samsung. Any suggestions to fix this issue? Samsung service centers are useless at least in Hyderabad.