In the new version of unity 6f.23, sprites do not calculate alpha correctly In Game (Android Platform).
In the preview it is correct, in Play it is not! I’ll show you an example.
You can correct it as soon as possible, this is important!
Then please submit a bug report so the problem can be reproduced, identified and fixed. You don’t state what you’re using to render this, for instance it could be a SpriteRender2D or a UI Image in which case it’s likely nothing to do with a “Sprite” itself.
A bug report has all the information required to reproduce the issue.
Or it could be whatever is rendering it? In the end, it’s just a Texture2D so you could read the texture yourself and examine it to verify if indeed it is an importer issue.