I'm shocked the cell phone actually worked... On a summit cell phones usually works a little. I barely get one bar on a summit, but on a trail far from a summit, zilch. No signals. nada. On that stretch where he was found, my phone was in airplane mode when I hiked through it. I only keep my phone only primary for pictures as I don't have a camera but i keep it in airplane mode, so I don't receive texts or calls or my battery get drained while searching for signals.