Cellular IoT networks and devices are getting cheaper and more ubiquitous, attracting more and more interest. Some organizations have deployed cellular IoT networks to solve a range of business problems and enable smart manufacturing. For many of these projects, organizations establish connections to obtain data from various devices.
How Cellular Networks Connect to the Industrial Internet of Things?
If you know how mobile phone connects to network then you move on to IoT devices.
It is big subject standardised by 3GPP(two standards NBIoT and LTE_M)