camera render wierd of grass and tree in my Fps game for mobile

I added grass and tree which are default on my terrain and when i play the game in my pc then its showing perfect but while i install it in my mobile its running like this. I don’t know what to do. so you can see all the grass of the whole terrain ? Please Help me out anybody.

i hope this makes sense to you guys.

It is solved by replacing some texture files which was i deleted by mistake. Now it is clear as i want.