Why can't the judicial E-Pass receive the verification code, and why is it turned off?

The mobile phone arrears judicial e-pass can't receive the verification code, which shows that the downtime is caused by the arrears of the mobile phone, so it can return to normal after paying the arrears. Judicial electronic communication information platform is an information management platform that specializes in locating and supervising community correction objects. It has the functions of real-time positioning, trajectory query, early warning and disposal, fence setting, SMS management, statistical analysis and so on.