Credit card return visit is a common way for banks to verify whether applicants apply for credit cards for themselves.

It doesn't matter if you didn't receive it the first time. You can call back after you see your cell phone. If there is no answer to many calls, the card department will refuse the credit card application on the grounds of "unable to verify that there is no answer to many calls".

It is suggested that when applying for a credit card, the applicant should leave his or her commonly used mobile phone number or a fixed phone number that is answered, so as not to affect the verification and approval of the credit card.