Shadows on Android. When and Where?

I have created a small and simple android game with unity, and the shadiws show on my Galaxy S3. I distributed to other people I know for testing and shadows are not appearing on the Note3, but are on the S4 - any deas?

Thanks

I have the same problem:(

Most likely you use HardShadow. Look, in your light source use of three options is possible: None, Hard, Soft. Thus not all devices support HardShadow, see docs Unity. Therefore check and probable change on Soft is necessary. Example see below:

 void Start() {
  if (!SystemInfo.supportsShadows) {
   this.light.shadows = LightShadows.Soft;
  }
 }

Attach this script to you light object. But it not always help. Android base tegra not support shadows.