Off the Grid Messenger
Honestly, I have been fantasizing about a device used purely for text messaging, with multiple connection modes (LoRA, LTE, Wifi, etc) and then just dedicate it to messaging. A small device just to send and receive messages either directly, and/or integrate with popular messaging services, but only messaging.Something to optimize battery, screen (only really need Eink or something low power), and other aspects for that mode of communication.