When WiFi wireless network first entered the market, operators didn't catch a cold, but many independent manufacturers experienced it first. In order to provide high-speed Internet access services for high-end commercial customers in the mobile state, many service providers devote themselves to the construction of WiFi wireless network hotspots with great enthusiasm. At present, nearly 100 operators around the world have opened GPRS commercial systems, trial commercial systems or experimental systems. Well-known operators include Britain's BTCellnet, German TMobile, China's SmarTone, China's Taiwan Province TSL, and operators from France, Spain, Portugal, Finland, Czech Republic, Denmark, Belgium, Italy, Russia, Australia, Singapore, Philippines and other countries and regions.
GPRS introduces packet-switched transmission mode, which fundamentally changes the GSM transmission mode using circuit-switched mode, which is particularly important in the case of scarce wireless resources. According to the circuit-switched mode, users will occupy the wireless channel alone during the whole connection period, regardless of whether data is transmitted or not. For packet switching mode, users only occupy resources when sending or receiving data, which means that multiple users can share the same wireless channel efficiently, thus improving the utilization rate of resources. The billing of GPRS users is mainly based on the amount of communication data, which embodies the principle of "pay as much as you take". In fact, the connection time of GPRS users may be as long as several hours, but they only need to pay a relatively low connection fee.