Hainan missed information reminder service tariff introduction?

Hainan missed message reminder service charges are as follows:

1, the monthly function fee is 3 yuan, and the registered users charge the monthly information fee 3 yuan;

2. When the calling user dials "the user who enables the missed call reminder service", it will be transferred to the missed call reminder system platform, and the calling user will not be charged, and the registered user will not be charged the information fee when receiving the notification message using this service;

3. If you use missed message reminder without registering business, you will be charged per call, and each message you receive will be charged 1 cent.