Android VR Media Player Material

Hi!

I have a media player that plays a 360º top-bottom video in a sphere where the character is inside.
It works perfectly in Oculus Quest, but when passing it on Android for a CardBoard I see everything black. (The device is a Huawei P10, and i launch from the Editor, and also packaging and installing the APK…)
The rest of the scene is seen correctly. But that material fails.

The materials for android have some kind of limitations compared to the Quest? Emissive?
I am using this material: https://answers.unrealengine.com/questions/942348/view.html

I have tried modifying the project settings as indicated in the packaging tutorial for android and nothing …
Some help?

Thanks in advance