Why is the mechanical rotating ring on the Xiaomi 17 Ultra unusable or impossible to turn on?

If the mechanical rotating ring on the Xiaomi 17 Ultra cannot be used or turned on, please refer to the following explanation:
1. The mechanical rotating ring is an exclusive feature of the Xiaomi 17 Ultra Leica Version. It is not available on the standard version of the Xiaomi 17 Ultra.
2. The regular version does not include the hardware structure required for the mechanical ring function, so the feature cannot be enabled through software settings.
3. If you are using the Xiaomi 17 Ultra Leica Version, please ensure the feature is properly configured in the relevant settings menu.