Let's say 5 million phones are in the hands of users across the world.
Within that 5 million phones people are going to drop them and they are going to crack. Then there are the phones that get put through torture tests by people for no reason " I squeezed this phone with both hands as hard as I could and I heard it squeek, this phone sucks."
And then there are the phones that get bought by crazy people .... " if I look at the screen on a 32 degree angle while standing in direct moonlight I see a halo effect, this phone sucks"
Now 5 million phones is a lot of phones ( its a lot of anything ) there are going to be some mistakes in the manufacturing process, and you will get a replacement phone from tour provider , but you also get " I can't believe that for $200 of my hard earned money Samsung can't get this right, I have never made a mistake ever and don't expect anyone else to either "
Just be prepared that when you get this phone its gonna suck .... Then you won't be disappointed.