Debit cards cannot be upgraded to credit cards, and credit cards can only be applied for again.

Conditions for applying for a credit card:

1. Adults over 18 years old.

2. If you do not have a credit card, you are required to provide the company’s financial certificate, your income and other relevant proofs. If you already have a credit card, you can apply for a card with the card, which simplifies many steps.

3. You must provide your ID card.

Call the bank’s credit card salesperson:

Generally, you can go to the bank where you want to apply for the credit card and ask for the salesperson’s phone number.

The salesperson comes to handle the application:

When the bank comes to handle credit card business, you have to fill in a credit card application form. This form requires filling in your true age, name, and income. Status, position and other specific circumstances. In addition, your original ID card is also required during the application process. Some banks require a photo of you and the staff. Provide the financial certificate provided by the company and stamp the company's financial seal. After filling in all the information, you will enter the credit card review stage.