Long-Distance Text Communication with Lora
hackaday.com
hackaday.com
I made an ESP32 based phone that can send LoRa messages (among other things... the phone was designed to be hacked on).
The back of the phone can be replaced by a custom PCB, sort of like project Ara except accessible to anyone who can design simple boards. One of the boards we designed is a LoRa radio and the phone book/contacts in the OS has a built-in field for a LoRa address.