I know we've had this discussion before, but as a reminder, do not count on your cel phone for rescue. Happens around here all the time, usually resulting in a helo rescue in the local mountains of unprepared hikers - no water, no food, no extra clothes, no bivy gear, no flashlight, no map or compass, nothing except a cel phone which went dead before SAR could pinpoint their location. They found a pair recently who wandered off trail, got separated from each other and wound up spending 4 or 5 days outside. By the time they were found, they were both beat up, badly dehydrated and neither one of them had shoes. I still can't figure that one out.