Elements missing on Galaxy S4 (value edition)

Hello there,

i'm programming a beam based puzzle game.

Some days ago i built the alpha version of the game to test on my mobile device (Galaxy S4 GT-I9515).

The problem is the line will not show on my device. You can see all Game Object and even the Water + Shader, but the line will not appear.

I already changed different quality settings and tested with all "texture compression" which unity offers (in Build settings).

I already mailed dozens of times with the develober of the line system (System: Fast Line Renderer) and he modified his Line Shader multiple time, but the line will not appear.

My friend and I tested on different devices:

• Galaxy S4 value edition (mine), Android 5.0.1, not visible

• Galaxy S3, Android 4.4, visible

• Nexus 7, Android 6.0, visible

• OnePlus One, Android 5.1.1, visible

• LG G2, Android 5.4.2, visible

• MotoG, Android 5.0.1, visible

• Galaxy S2, Android 4.2, visible

What is different with the Galaxy S4? I don't get it!

This pic shows simple functions (no relevant graphic included), and this is a screenshot from OnePlus One.

On S4 the line, beginning from player is not displayed.

Thanks for your reply. Matze

EDIT:

i guess i need smart people from Unity to solve this. It seems to be a problem on Galaxy S4.