At least smartphones don't leave poo on the trail!
I'm unabashed. I bring my smartphone. And I virtually never talk on it. When I can get a signal, I'll usually text my wife, because it makes her feel better, and because a text can often get through when a voice call can't. Otherwise, it's in airplane mode to save battery. I warn colleagues when I go hiking that I'm going to be "off the grid." My boss knows me well enough that he answers, "knowing you, you mean that literally!" and chuckles.
About half my hikes are bushwhacks, because trails are suggestions and (thanks D-Low and Mags!) routes are the future of hiking. I use the GPS app but don't depend on it; in fact, the last time I led a bushwhack, my battery unexpectedly gave up the ghost a short way in despite having got a full charge that morning. My partner (nervous when he's out of sight of a white blaze) said that I still made it look like a walk in the park. I'm a computer geek: I use tools like Quantum GIS, Mapnik and MOBAC to make my own smartphone maps of where I'm planning to go, and download them into Backcountry Navigator.
I usually carry a few books on the phone, and sometimes I'll read in the evening or when sitting somewhere waiting for the hail to stop. I usually have some music on it, too, but I seldom find myself listening. I keep thinking I'll want to have it along, but then just never bother to put in the earbuds. (Exception: Something cheerful when I'm 2500 feet up a 3000 foot steady elevation gain can help keep me moving.) I have a movie or two on it, but that's for plane and train rides; it's hell on the battery when I'm off grid.
I have fun with PeakFinder, and find that few other hikers object when I use it to find out, "what mountain is that, over there?"
I use an app to do text memos, although I also carry some paper for notes and journalling.
I'm ridiculously colour-blind, and have an assistive app on the phone to help me distinguish colours. There's one local trail with dark red blazes that I have a deucedly hard time following without having the app to help me spot them. Before I had the app, I always fell back on bushwhacking technique when hiking that one: "I know it comes down to a stream in another mile. If I follow a contour line east, I'll hit it again."
I take the occasional photo with the camera. because sometimes I get magical light when I don't have my other camera along:
Plotterkill in the mist by
ke9tv, on Flickr
In any case, I may synchronize the clock on the phone with the clock on the camera and tap 'Add waypoint' on the GPS app when I take a picture, so that I can geotag photos after the fact.
I've even been known - quite against my nature - to use my phone as an alarm clock if I have a long day ahead or need to make a pickup time.
And I can recall at least once changing my headlamp batteries by the light of the flashlight app on my smartphone.
I never talk on the phone in front of other hikers unless I'm doing something like calling for a shuttle for the whole group. I try hard not to let other hikers see the screen light at night. And I mostly have my eyes and ears on the trail and on my companions.
And still I know people who say that
my phone ruins
their wilderness experience - even when it's in my pack. To me, that's somewhere between 'HMHDI' and '***?' The funny thing was that the last hiker that lectured me on that was thirty years
younger than I am. So I don't think it's a generational thing.