A cellular network is a radio network distributed over land areas called cells, each served by at least one fixed-location transceiver known as base station or communication tower. When joined together these cells provide radio coverage over a wide geographic area. This enables a device to move from area to area and to communicate with a communication tower in the network.

The communication tower transmits data from the device via a fixed line to “switch”. The switch on recognising the type of message as data switches the data to the web.

The data is then collected from the web by the device company’s server.