My snail mobile phone number can't make a call, and I can't get a call. Only traffic can be used. What happened?

If your snail phone number can't make or receive calls, you can only use traffic, probably because you are identified as a "three low users". According to the regulations of Snail Mobile, users whose voice usage is less than 8 minutes, SMS usage is less than 3, and traffic usage is less than 5M for two consecutive months will be identified as "three low users". Users identified as "three low users" will be shut down in one direction, which means that users will not be able to make and receive calls, but the traffic can still be used. If your account is closed, you need to call customer service to reopen the service.