Why is my XBee 3 Cellular LTE-M/NB-IoT modem not connecting or completing the registration process?
One of the first things to check is to make sure that you have set the APN value for the SIM Card you are using.
Next, and most important if you are outside of the United States, is to check and verify that you have LTE-M/NB-IoT service in your country/location. One of the best places to verify this other than calling your vellular provider is to go to: https://www.gsma.com/iot/deployment-map/#deployments
May 05, 2021