How does DNF change secret mobile phones?

Preparation tools: computer, mobile phone number, Internet access.

1, computer search QQ security center, enter the website, click login in the upper right corner, and enter the account to log in.

2. Then click the replace button on the right to enter the next step, as shown in the figure below.

3. Enter the next interface and click with the mouse to select the mobile phone number. You can also use this option.

4. Fill in the phone number to be replaced in the pop-up interface, and then click OK.

5. Then enter the original password-protected mobile phone number and click the OK button below.

6. The initially bound mobile phone will receive a verification code. Enter the verification code, click OK to complete the verification, and then you can replace the password-protected mobile phone.