Does China UnionPay Express modify the mobile phone number or send a message to the original mobile phone number?

Does the subject want to ask, "What happened when China UnionPay Express modified the mobile phone number or sent a message to the original mobile phone number?" ? Cache problem, association problem.

1. Cache problem: The system cache of China UnionPay Express has not been updated, resulting in the information still being sent to the original mobile phone number. Log in again after canceling the China UnionPay Express account, or empty the cache of China UnionPay Express.

2. Related issues: China UnionPay Express Account is related to other service bank cards and Alipay. The mobile phone number needs to be modified in the service to ensure that the information can be sent to the new mobile phone number.