In the LTE_MODE_PREFERENCE Kconfig description the CONFIG_LTE_MODE_PREFERENCE_LTE_M_PLMN_PRIO option states that:
"LTE-M, PLMN prioritized
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."
In this description it says that the modem prioritizes to stay on home network, but in %XSYSTEMMODE at command the prioritization states that:
"3 – Network selection priorities override system priority, but if the same network or equal priority networks are found, LTE-M is preferred."
So are these options same underneath and does home network in the first one refer to the sim operator's network or something different? If it does mean sim operator's network does the option have any effect when roaming?
Also do either of these options affect the modems operation when waking up from PSM?