The mobile phone number I used to apply for Guangfa Credit Card is no longer used, but it is bound to the mobile phone number, so I can't receive the SMS. How do I change my mobile phone number at the bank? After you dial the bank credit card service hotline with your original mobile phone number 95508, you can enter the manual service with your ID number (or card number) and inquiry password, and notify the bank customer service staff to modify the mobile phone number. After checking your identity information, the modification of your mobile phone number will take effect immediately. If the original mobile phone is lost, please bring your ID card and card number to the counter outlet for modification. If the customer service is not changed, the original mobile phone number is lost, so you can only change it at the counter or online banking.