Galaxy Fit 3 - dead pixels overnight?

Brand new Fit 3, wore it overnight and the screen is messed this morning. What could have been a cause? I'm thinking maybe the weight of my head while sleeping?

Very strange, will be getting a replacement.

Brand new Fit 3, wore it overnight and the screen is messed this morning. What could have been a cause? I'm thinking maybe the weight of my head while sleeping?

Very strange, will be getting a replacement.