2. Click the My 58 option at the top of the webpage.

3. Click the security settings option under the user's central page.

4. Click the Unbind option behind the authenticated mobile phone number.

5. There are two ways to unbind. If the original mobile phone number is still there, you can choose to accept SMS. If the original mobile phone number is gone, you can choose the one below that can't accept SMS.

6. Let's take SMS as an example. After clicking, we will enter the original mobile phone authentication. Click the request verification code option, and the system will send verification information to the mobile phone number.

7. Fill in the accurate verification code after receiving the text message, and the mobile phone number will be untied.