BLE and WiFi are power hungry on any platform. LoRaWAN or zigbee are better for low power, low bw comms. Kinda sacrifice simplicity & ubiquity of support in tha

BLE and WiFi are power hungry on any platform. LoRaWAN or zigbee are better for low power, low bw comms. Kinda sacrifice simplicity & ubiquity of support in that you need a gateway/router of some sort, but they are solid solutions with long range and high penetration.