Weird Graphics on Android Smartphone (Sprites)

Hello everyone (sorry for bad english)

I have a problem with my Sprites.. My Sprites does have a weird border when i slice it. I set the Filter Mode to "Point" and deactivate "Generate Midmaps" So the Sprites or now working very good in the unity Editor. It works perfect on my Sony Xperia Z Ultra too.

Today i tried the game on a little bit older smartphone Samsung Galaxy S3. The problem ist that the Sprite has a pink border where it is sliced even its perfect in Unity and Sony Xperia Z ultra..

How can i fix this ? Or where is the problem ?