Search for mobile phone number or micro-signal: If you have already entered the other person's mobile phone number or micro-signal when adding friends, you can try to search for the other person again through the WeChat search function to see if you have become friends.
Open WeChat, click "I" at the bottom right to enter, and click the first column of micro signal. Click "My Account" in the third column, click "Mobile Number" in the third column, click "Deactivate" to deactivate the mobile phone address book and exit WeChat. Restart WeChat, enter the last step to enable mobile phone binding and request SMS verification.
You can contact WeChat customer service, provide relevant identity information and account information, and ask if there is any other way to retrieve friends' adding records. It should be noted that once the WeChat plus friend record is deleted, it may not be fully recovered. Therefore, it is suggested to save friends' information and records in time when adding friends to avoid losing them.