Method 1: Bring the bank card and ID card directly to the bank counter to find the staff to unbind.

Method 2: Unbind online, taking "China Industrial and Commercial Bank" as an example, the operation is as follows:

1, the first step is to click the software "Industrial and Commercial Bank of China" on the mobile phone desktop;

2. Then click "Click Login" and enter the corresponding account number and password;

3. Click "My" in the lower right corner after logging in;

4. At this time, we will see the function of "Security Center" and click in;

5. Then open "Mobile Number Management" to enter, as shown in the following figure, this page has many functions, so don't make a mistake;

6. Click the "Replace" option after entering;

7. Finally, enter a new mobile phone number and verify it to unbind it.