Fog problem on Android device

I have a couple of scenes where I want to use strong fog in my Android game to simulate low visibility conditions. Unfortunately this works pretty bad when I test on Android device. The fog is not consistent and appears too strong or too weak on big objects like ground or walls. So when I move the camera around the scene, I will get fog covering the larger objects too close at one position, making it appear too strong and when I move to other position it will appear too weak again, making small objects in the distance covered by fog, while big objects like walls or ground will be wisible at that distance.

Is there some things I could do to correct this?