I bought this phone(Galaxy a16 4g) two weeks ago but it has a problem. The screen has a problem. It has had this problem since day one. Two days ago, the One UI 7 update came to it but the problem still hasn't been solved. If the screen is at 90Hz, it makes it worse. This problem is more visible in the dark.The screen colors are not uniform in low light. If the screen is at 60Hz, it makes the problem less. But it still has a problem.  Please fix this problem.