Sunset
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Same here. I always download offline maps before traveling overseas, but I usually don't think to do it before vacationing in the U.S. I suppose I just (mistakenly) assume that there will always be some level of cell signal available when I need it, even if it's only "1 bar". But nope, sometimes it's actually fully unavailable and for much longer stretches than one would think. Mountainous areas and very rural, unpopulated places are the most problematic.
Your story motivated me, I use Maps.me when traveling, so now I just downloaded my State and neighboring States , plus the State we will be flying to for vacation.
Just in case I need a map.