The mobile phone is restored to factory settings, and the WeChat display needs to pass full verification when logging in with a new mobile phone.

This is a security solution for WeChat settings. Under normal circumstances, restoring the factory settings cannot be recognized as a new mobile phone. You should just log in directly, but since you can't, you can only ask your friends to log in for you. Sometimes, because the WeChat server is busy, the verification sent out has not been received. It should be possible to wait a little longer and try again.