The following network modes are available (LTE_NETWORK_MODE):
- Default: Use the system mode currently set in the modem.
- LTE-M: LTE Cat M1 only.
- LTE-M and GPS: LTE Cat M1 with GPS enabled.
- NB-IoT: NB-IoT only.
- NB-IoT and GPS: NB-IoT with GPS enabled.
- LTE-M and NB-IoT: Both LTE-M and NB-IoT enabled.
- LTE-M, NB-IoT and GPS: Both LTE modes with GPS.