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Unfortunately, OLED screens can be sensitive to pressure. For the bluish marks, you can try gently cleaning the screen with a microfiber cloth and a screen-safe cleaner. If the marks persist, it might be best to contact Samsung customer support for further assistance.
Sorry, there was a problem. Please try again later.You have to carefully remove ALL residue to remove marks....if there is still a bluish streak that means there's still oil or residue on the screen, much like thoroughly cleaning glass. I have had success with Sprayway Ammonia-free glass cleaner and soft clean cloth. Once clened you then have to go over it two or three times more to remove cleaner and residue and "dry it"
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