here is on Android
here is on iPhone
here is playground
Cc @sebavan
Your texture is too big this should work with 2048 max size. I would also highly recommend to rely on a .env file instead: Using An HDR Environment For PBR | Babylon.js Documentation
thank u so much
As per my experience, you should target a resolution of the iphone X to play it safe:
2436 x 1125 px (watch the height!)
Also, aside from the size, the weight of a single texture should not be above 1mb.
Thank you for your answer,it work!