China Unicom has supported the nationwide card exchange in different places. For the number registered in real-name registration system, if it is necessary to change the card in different places across provinces or cities, the owner himself can go to Unicom's own business hall for consultation with his valid certificate when accessing the network.

Tips:

1. You can log in to Unicom's online business hall, click Life > Business Hall on the home page or call local Unicom 100 10 customer service.

2. You can log in to China Unicom APP, click "Service > Life > My Nearby", enter your area and find the address of the nearby business hall.

3. Due to the differences in handling policies among cities, the specific handling situation shall be subject to local actual regulations.