Apple's mobile phone software constantly reminds you that you need to update your payment information. What does this mean?

Apple's mobile phone download software has always prompted the need to update payment information. This prompt is caused by the incomplete setting of Apple ID account information. The solution is as follows:

Select "UnionPay UnionPay" when providing payment method.

Then fill in the bank card and enter the mobile phone number reserved by the bank (note: the mobile phone number must be bound to the bank card before it can be used).

Next, fill in the person's last name, first name, street address, region, postal code, province and mobile phone number under the billing address for easy use.