I'm not sure if you're going to be able to do this, but I'm sure you're going to be able to do it.

If you need to replace the nano sim card, you can go to the local Unicom's own business hall for the specific replacement of the tariff standards and procedures vary from city to city, you can consult the local artificial customer service to understand. If you are looking for information about Unicom's business halls, you can go to Unicom's online business hall, click on "convenient service" on the home page - "business hall query", and enter the business hall query page by typing in "province", "City", "keywords" can query the business hall address, business hours, contact phone and other related information.