GPRS (2.5G) or General Packet Radio Service is a technology that is an extension of the existing GSM network. With this technology, mobile data can be sent and received in a more efficient, faster and cheaper way. With GPRS, devices are always online, which means that they have a constant connection to the internet and are charged on the amount of data they download or send. The device only keeps the connection busy when it is actually used. As a result, the capacity is better utilized and more data can be exchanged simultaneously. The maximum speed on GPRS is between 7 KB/s and 14 KB/s. The technology is called 2.5G. This is not an official Generation. It is so called because it is between 2G and 3G. 2G and 3G networks are still offered within the M2M service.