Iphone 14 Pro Max display issue

Hey,

I have purchased brand new iPhone 14 Pro Max several weeks ago, and I'm having a problem. The problem is some kind of horizontal line appears and flash on the screen. Turn off the screen can help for ~10sec, but after I can see the same line in the same place. I tried turning off always on screen, auto brightness and tap to wake, but still facing the issue. I even tried restart, force reset but no use. iOS 16.5.

p.s. This is my first bad experience with Apple and very bad experiences because I bought my wife this iPhone to replace her previous Samsung(