Change the reserved mobile phone number of Huaxia Bank's credit card and call Huaxia Bank's customer service number. Huaxia Bank credit card holder dials Huaxia Bank credit card number 400-669-5577 with the original mobile phone number, and enters the manual service with the ID number (or card number) and inquiry password, and informs the bank customer service staff to modify the mobile phone number. After checking the identity information, the modification of the mobile phone number will take effect immediately.

Cardholders can also use other numbers to call Huaxia Bank's credit card customer service phone, but for security reasons, using other numbers to call customer service phone will take effect the next day.

If the number is changed due to the loss of the reserved mobile phone when applying for a credit card, it is best for the cardholder to bring his ID card and credit card to the counter outlets of Huaxia Bank for modification.