I have encountered a native error when build is in android that when i load the scene “main.unity” the game SOMETIMES crashes with a native error… So it’s ankowledged that this is a problem or what? When i change the scene name it never crashes 
So thank you in advance!
There is no such dependency related to naming a scene as main or whatever. The whole Unity Player game runs in a single activity so there won’t be any conflicts with name. If you are using some native plugins still there are no chances of name mangling as the Scene is really a Unity3D specific thing,