I do trail-running, backpacking and skiing in the Colorado backcountry. I'd never trust my safety to a cell phone due to the fragility, temperature sensitivity

I do trail-running, backpacking and skiing in the Colorado backcountry. I'd never trust my safety to a cell phone due to the fragility, temperature sensitivity and poor battery life. I carry an inReach and have used the SOS feature. That thing is bullet proof and can tether to my cell phone anyway if I want the convenience of the phone for typing messages etc.