How to fix light/fog problem on android phone after build?,Fog problem after build on mobile

Hi, I am building a game where objects pop up suddenly and you have to avoid them. For this, I am using a black fog to cover the obstacles (pictures below). I am using Exponential Squared, this gives it a better effect.

.

Problem is, when I try it out on my phone (after build), the ground keeps changing colors between black (fog color) and white (ground color). When I disable the fog, there is no problem but that’s not my goal. And I am new to unity so detailed answers are appreciated.

.

PC editor :

.

.

Android phone :

And sometimes the ground is completely black.

I get this too

.