Can't I use the secondary card of the online merchant bank if I change my mobile phone number?

The vice card of the online merchant bank can be used after changing the mobile phone number. The steps to change the mobile phone number are as follows:

1, mobile phone login online merchant bank, click on the mine in the lower right corner.

2. Click the Settings icon in the upper right corner.

3. Click on the phone to change the phone number.

4. Enter a new mobile phone number according to the page prompts.