Does China Mobile charge for SMS notification traffic?

Hello, did you say "data stream package threshold reminder service"? If yes, and you are a customer of Beijing Mobile, there is no charge for this function. After you start the "Data Traffic Package Threshold Reminder Service", the system will send you a reminder message when the accumulated mobile data traffic in the current month reaches a certain value of the booked package and the traffic beyond the package reaches a certain value. Please refer to.