DeLorme (now Garmin) inReach SE Satellite communicators. These were used by a church men’s group on (3) weekend hikes. This is the least expensive way that I know to communicate with friends/family when you have no cell phone coverage. Built-in SOS for emergency response. SOLD 2, Have (1) available, Price $ 150.00
Link to full product info:
https://www.amazon.com/DeLorme-inReach-SE-Satellite-Tracker/dp/B00BX7TJ2O
Call or text 843.six9seven-five611