I was wondering,
IS there other stuff like occlusion culling and LOD (Level of detail) meshes to improve
game performance on mobile.
And is there a way to change the shadows to ultra high quality I tried hitting shadow resolution to very high
But its still showing tiny boxes on the edges of the shadows
by some sort of script
Mobile platforms only support hard shadows but some Android devices don’t even support em. There are paint shadow stuff for mobile that improve the shadows a bit.
Mobile performance is mostly about efficient custom shaders and minimal overdraw (when physics or scripts are done ok).
What are you talking about, of course you can have soft shadows on mobile, unless I’m completely ignorant here.
@blastintyres Change the value for how far away to show shadows. Even if you have it set to really high resolution, if it’s covering a very very large area, it will still look bad to a degree.
Are you sure? unless it has changed, mobile platforms only support directional lights which only renders them as hard shadows (soft setting cleans the edges a bit on supported devices but does not do real soft shadow)
http://docs.unity3d.com/Manual/DirectionalShadowDetails.html
Well I stand corrected, I thought I saw a difference between soft and hard shadows on mobile so I assumed it was real. I’ve been living an illusion, thanks Ostwind 
Here’s a very good summary of performance optimization techniques from the Unity documentation.