I don't know which bank's credit card the owner applied for, but generally speaking the way to inquire about each bank's bill is pretty much the same, generally speaking there are several ways to inquire:

1. Counter inquiries, go to the bank to find the staff, report the card number and ID card number inquiries.

2. Use the ATM machine query, the card will be inserted into the ATM machine inside the query.

3. Online banking inquiries, generally logging into the credit card center of each bank, logging into the personal system can be inquired.

4. Telephone inquiries, just call the bank's customer service hotline, you can find out.

5. If you want to know your credit card spending details, the most effective way is to search in WeChat: Card Review, from which you can get your credit card spending index, credit card transaction behavior, credit card spending characteristics and other information.