When your 3D model’s normals appear confusing on a tablet, it’s typically due to compatibility between the normal map format and the tablet’s rendering software or hardware limitations.
Normals control how light interacts with a model’s surface—if the tablet can’t process the map type (e.g., .tga vs. .png) or lacks GPU power for high-res maps, the model may look flat, flipped, or distorted. This is common with older tablets or apps that don’t support the map’s channel setup.
To fix it, try lowering the normal map’s resolution (to 1024x1024 or smaller) or converting it to a widely supported format like .png. Test the model in a basic 3D viewer app on your tablet to narrow down the issue.