1. The householder carries his ID card, bank card and mobile phone to access the network unlimited times, and then opens mobile banking to re-bind.

2. Log in to online banking, manage in My Account-Other Customer Service-Mobile Banking Client, unbind, and then log in by mobile phone.

3. Call customer service to unbind and rebind.

The reserved number of China Construction Bank's mobile banking is empty: China Construction Bank did not leave a phone number when it was doing mobile banking, or the system was incorrectly filled in during maintenance.

Extended data:

Modification method of reserved mobile phone number in bank:

It is reported that the mobile phone number reserved by the bank card can be changed on the bank website, but only if you have opened online banking or mobile banking. People log on to the bank official website, enter the personal system section, enter the account management section, then select "Customer contact information modification", and finally click to change the mobile phone number. This is one of the simple methods.

If there is no online banking, you can go to the counter. Bank card holders can bring their valid personal identity documents and their bank cards to the bank counter. The bank counter staff will ask the cardholder to provide the previous number and password of the bank card, and then fill in the relevant documents.

If you don't have online banking and don't want to go to the counter, you can call the bank's customer service phone to make changes. To make changes by telephone, the bank needs to provide enough personal information to determine that it is the cardholder himself. Telephone customer service staff will ask many questions, such as company address or home address, mobile phone number, ID number and so on. This information needs to be consistent with the personal information you fill in at the bank.

References:

Baidu encyclopedia-reserved mobile phone number modification details