You changed the SMS of your old mobile phone number to your WeChat official account. Did you receive a SMS to remind you to change it?

What you want to ask is, after the public mobile phone number is updated, can the old mobile phone number be changed by SMS? Old mobile phones will receive SMS reminders.

There are several mobile phone numbers bound to public accounts, one of which is SMS notification, which can be set separately. If the mobile phone number of SMS notification is not modified, financial transactions and other information may be sent to the old mobile phone number.

It is suggested that after the mobile phone number bound to the public account is changed, the information change procedures should be handled at the relevant units as soon as possible, otherwise the bank background will send the accounting information to the original number by default. If the original mobile phone number is used by others, it is easy to cause financial losses and disclosure of accounting information.