[elcapitan]

This is even more important in the outdoors - I had an instance last year where I messed up and didn't check the weather report before going, so I found myself in the middle of a forest in what turned out as the worst storm of the year. My phone's touchscreen immediately became unusable because of heavy rain and no cover. I fell back to a mix of intuitive knowledge of the area and a small compass I keep on my wristwatch, for general direction. It was a not so much fun run through a massive thunderstorm but worked out fine in the end.