Change texture of gltf in ios

I change the texture of a part of gltf model in my code and it was worked correclty,But in ios devices it does not work
last texture appear again
,We have just one model but with changing texture of a watch I can see 2 but in other devices and desktop it is true

This is in iphone XS safari and chrome :

This is in Desktop windows :slight_smile:

What is the reason?Is there any difference between texture and rendering in ios and other devices?