Is it fraud to recruit drivers to forward phone numbers in a circle of friends?

There are many reasons, at least four reasons, because the mobile phone is empty. This phone is set up with call forwarding, and all incoming calls are forwarded to an empty number.

The other party blacklisted your mobile phone. You can find another phone and try again. If you can get through, it means it blacklisted your mobile phone.

It may be a new platform launched by mobile, and its compatibility may not be so good. The solution to this situation is very simple. You can get through by dialing a few times.

The other party used the number change software, so the number set for it will be displayed on your mobile phone.