Why Sprites see ok in preview and not in Android or Android Emu?

I have tried in many ways, minimaps disable, enable, truecolor, compressed ... the camera zooming in and out, the depth ... The sprite scale is 0.3, if I scale 1 looks ok. I guess that's the problem, scale. If you use sprites scale in Unity With work always wrong? My Inglés is bad, sorry, I hope you understand me.

First Image: Preview Unity and StandAlone

Second image: Android device or Android Emu, looks =