Making LoRa (not LoRaWAN) available to smartphones can also be achieved through general purpose modem firmwares for, e.g., esp32 boards that also contain lora transceivers.
The rf95modem firmware exposes LoRa for D2D communication via serial/usb or BLE with AT modem commands and works with many different boards. https://github.com/gh0st42/rf95modem
Full disclaimer: I am the author of rf95modem :)