when i added model(mixamo michelle) to a scene, I can’t launch on my iphone. it keep loading and never started. But it worked on my galaxy and pc. There was no error and also i also tried model with animation and without
Just had a quick look on PC, you are using 750MB of VRAM
iOS will only let use 150MB or less most of the time
As most of the VRAM is from textures, you can try to use Basis to hardware compress them and use less VRAM but I still think you be over the limit. Texture Compression | Learn PlayCanvas