It uses the Semtech SX1262 power efficient LoRa module. Software enabling the LoRa module to work with the PinePhone has been written by JF. He has showcased the PinePhone receiving and LoRa messages using the add-on back case.
The case is built very sturdy out of black, thick and polished plastic. The back case is built in a modular way and the electronics are easy to replace. This isn't only good from a repairability perspective but also makes it easy to mod the existing functionality or hack in a new one.
Video showcasing sending / receiving LoRa messages using the PineDio add-on back case