Mobile information service, what is mobile information service?

Short message service refers to the service that uses the bank's network and information technology to send information such as the time, amount and transaction mode of account funds change to the designated mobile phone by short message, so that enterprises can grasp the changes of account funds in time. Mobile communication is a communication mode between mobile users and fixed-point users or mobile users. Communication in which one or both parties are in motion. Include land, sea and air mobile communication. The adopted frequency bands cover low frequency, intermediate frequency, high frequency, very high frequency and ultra-high frequency. A mobile communication system consists of a mobile station, a base station and a mobile exchange. In order to communicate with the mobile station, the mobile switching office sends a call to the whole network through each base station, and the called station sends a reply signal after receiving it. After receiving the reply, the mobile switching office assigns a channel to the mobile station and sends a signal from this channel to ring it.