Can't find the other party's mobile phone number through micro-signal. As the user's personal privacy information, the mobile phone cannot find the other party's mobile phone number through WeChat. If you need to know that the other party needs to set up a micro signal in the data notes for others to see, find a friend from the WeChat address book and click to view the other party's personal information, only the other party's nickname, micro signal and so on. You can see it on the page, and then click on more personal information of friends below. If a friend deliberately leaves a number, it will be displayed in the other party's signature.