lte_lc_system_mode_preference

enum lte_lc_system_mode_preference

#include <include/modem/lte_lc.h>

LTE mode preference.

If multiple LTE system modes are enabled, the modem can select the mode that best meets the criteria set by this configuration. The LTE mode preference does not affect the way GNSS operates.

Note that there's a distinction between preferred and prioritized mode.

Enumerator
LTE_LC_SYSTEM_MODE_PREFER_AUTO	No LTE preference, automatically selected by the modem.
LTE_LC_SYSTEM_MODE_PREFER_LTEM	LTE-M is preferred over PLMN selection. The modem will prioritize to use LTE-M and switch over to a PLMN where LTE-M is available whenever possible.
LTE_LC_SYSTEM_MODE_PREFER_NBIOT	NB-IoT is preferred over PLMN selection. The modem will prioritize to use NB-IoT and switch over to a PLMN where NB-IoT is available whenever possible.
LTE_LC_SYSTEM_MODE_PREFER_LTEM_PLMN_PRIO	LTE-M is preferred, but PLMN selection is more important. The modem will prioritize to stay on home network and switch over to NB-IoT if LTE-M is not available.
LTE_LC_SYSTEM_MODE_PREFER_NBIOT_PLMN_PRIO	NB-IoT is preferred, but PLMN selection is more important. The modem will prioritize to stay on home network and switch over to LTE-M if NB-IoT is not available.