Why is my display flickering in low brightness?

[AC Question]

I brought a Samsung Galaxy on7 pro a few days back from Amazon and i noticed that my display flickers(slight change in brightness) when the brightness is low and it stops when i increase my brightness. Did i get a duplicate product?
How to resolve it?

 

[B. Diddy]

Welcome to Android Central! Is Auto Brightness on? If so, turn it off and see if the flickering still happens.