How to get rid of a small pin code in front of WeChat account and Ann's mobile phone number?

If the WeChat account number and the mobile phone number in the security are marked, you can go to the WeChat APP to log out, and the logged-out information will not be repeated.

How to unlock the mobile phone number on WeChat? Click on me, settings, account and security, mobile phone number, change the mobile phone number, enter the mobile phone number, and click Next to verify how to unmark the mobile phone number on WeChat.