Obviously, professionals might use specialized equipment but if you are an amateur Archaeologist, Botanist or even a Park Ranger, being able to quickly catalog things you see in the outdoors could be very useful. Note that some iPhones can now be used underwater, which might give you some excellent shots.

Some other potential uses might be camping and hiking; as long as you can still get a signal, your location capture should work. However, even if it doesn’t, you can turn on dictation for the free text field and describe where you are. Boat, bus, and wagon trips, etc. could be particularly nice as you spend time standing and/or sitting in one location while the vessel moves you around; it might be nice to be able to check those out later.