It's a back up. I planned my route at the beginning of the day. That alone is worth it's weight in gold even if the phone breaks or get's lost mid day. If so I'd buy an overpriced burner phone at the next town (although in years of traveling I've never just lost or broken a phone at a critical time).
I would never have made it to many of the places where I was at without a phone or at least some other GPS
I would never have made it to many of the places where I was at without a phone or at least some other GPS