The electronic GPS tracking device uses a network connection to transmit the data it’s collecting. In most cases, this will be a cellular data connection (e.g. 4G) using an activated SIM inserted into the device. However, trackers can also connect to other networks, such as a Bluetooth network, or satellite connection. These networks connect to the internet to send this data to an online fleet management solution, where a user can login on their desktop computer, or mobile device and view the collected data. In addition to sending data via the internet, GPS tracking devices can use a built-in SIM to send SMS messages directly to a mobile phone.