The reserved mobile phone number can be changed, but you may not have found the right method.

You can try the following methods:

1 Palm Life: To query/modify the reserved mobile phone number of a credit card, you can use Palm Life My→Avatar in the upper left corner→Credit Card Mobile/ Email processing.

2 Call the credit card hotline, enter your ID number or card number and inquiry password according to the voice prompts, and then select 9→4 to enter manual service processing.

3 Bring your ID card and credit card to the branch of China Merchants Bank to apply for the business of modifying the reserved mobile phone number.