On LTE-M the MQTT(S) protocol could be a valid option depending on the backend that you are using. On NB-IoT we strongly advise against the use of MQTT because it would fail to work in areas of bad reception. Nevertheless the WalterModem library should implement the MQTT protocol.
On LTE-M the MQTT(S) protocol could be a valid option depending on the backend that you are using. On NB-IoT we strongly advise against the use of MQTT because it would fail to work in areas of bad reception. Nevertheless the WalterModem library should implement the MQTT protocol.