Technology is great, until the power runs out. One group I knew of was following a map through the woods on a smart phone; that was until the battery died and now they had no map or idea as to what to do next. With all the years I’ve hiked through the woods, I’ve never had a battery die with my paper map; it’s gotten soggy, ripped, but still worked.
There was another group that got lost in the mountains recently. They had a GPS but no map of the trail system on it. So hopelessly confused and lost they called out for help via their GPS. The ranger used his GPS to locate them, 50 feet from the trail. So they had power, just not a clue.