Does the Xiaomi 15 support SIM primary and secondary card distinction?

The Xiaomi 15 supports SIM primary and secondary card distinction, which is a convenient feature if you need to manage two numbers.
For your reference, here are the advantages of SIM primary and secondary card distinction on the Xiaomi 15:
1. The main and secondary SIM cards in dual SIM smartphones refer to two different mobile network connections in the same phone. These SIM cards can be used for voice calls, text messages, and mobile data;
2. You can use one SIM card for work and another SIM card for personal life to achieve the separation of work and life;
3. If the network of one SIM card has poor signal, you can switch data or calls to the other one.