phone GPS works great as long as you have cell coverage.
And therein lies the problem with a phone based GPS.
They work well when you have sufficient service signal, but when you are remote & there's no service, you have to have previously downloaded the area(s) that you will be in & that can be a bit of a pain to do, depending on the software being used; actually that can be done with Google Maps now as well.
I use Backcountry Navigator on my android & it works pretty well & I used Gaia on an I-phone when I had that & it works well too...................
after you learn to use them.
A dedicated GPS (Garmin) is more intuitive to learn & use & is worth the $$ if you are going to be away from cell service on a regular basis & need a GPS.
JMHO, YMMV
MM
