GLB file problem - Blender

Hello, I have a glb file that in glb viewers looks completely fine without any glitches, but when it is switched to an AR viewer it looks like this, I would like to know if it is a modeling problem or the file or the AR viewer, and how to fix it.

The first image is as seen in glb and the second in AR

PS: Sorry for my English

The rendering of a model depends on various factors e.g. the lighting of the scene or the shader implementations of the underlying engine. So if the rendering is not satisfying, I would try to modify the viewer’s lighting if possible.