Setting the security issue can further improve the security of your account, which can be used to modify the bound mobile phone number and login password.
1. Log in to the user center, "Account Settings" - "Security Settings";

2. Find the security problem and click "Enable Now";

3. Select the security question to set. After setting, "Save the security" means the setting is successful.

Note: Please keep the security answer properly and do not disclose it to others to avoid unnecessary losses.