2. The column of "value-added service fee" of China Mobile includes call forwarding, GSM, SMS, voice SMS, MMS, GPRS traffic fee, caller ID, mobile phone newspaper and color ring back tone, etc. , so as to improve the service level of telephone charge information and standardize telephone charge information.
3. Mobile value-added services are services that mobile operators can choose to use on the basis of mobile voice services for different user groups and market demands.