I created a project using Reality Composer Pro. When I export to a .usdz file, it works well on iPhone 13, 14, 15, and 16 but not on iPhone 12 and 11.
In the timeline, I use a behaviour that is on added to scene to active intro animation and loop background audio. But it does not work on old device like iPhone 12 and 11. Also, all interactive taps/touch points/audio don't seem to work too.
Iphone 13,14,15,16 is on ios 18.1. iPhone 11, 12 is on ios 17.6.1.
Here is sample usdz file exported from REality Composer Pro 2.0 that has problem above: https://drive.google.com/file/d/1sHZn9JABTswLq2flYjToTbWDuE5T7eNw/view?usp=sharing