I&#x27;m pretty sure that many of your concerns could be alleviated with a lifeproof case (rugged and waterproof), the maps.me app (offline maps for iPhone, also supports KMZ hiking trails), and a few 10,000 mAh USB batteries. I use one which typically keeps my phone charged for a few days, with a lot of use.<p>This is great for relatively small hikes. But if you&#x27;re going off on a major expedition, then sure, you should probably take the professional radio and Garmin gear, and all the other survival gear people normally bring.<p>But if you&#x27;ve already got the lifeproof case and extra USB batteries, I think this Beartooth device looks pretty useful.