Darkened scene on Android build

I have an issue with Android build of the game: the overall visual becomes significantly darker than it appears in Unity editor or WebGL build for PC. It needs to be mentioned also that I use unity mobile unlit shader for all objects except the terrain, which uses terrain splat shader (mobile faster). The biggest part of the problem is that the terrain retains its color and light as it is in the editor on PC, while other objects (archeticture and props') becomes darker. Is there any guess how to approach this problem?