I have an older Apple iPhone XS that is no longer in use as a telephone. The GPS chip in the phone is accurate within a couple of yards. I have a golf range finder app installed on the phone, but have to load up the course on WiFi before heading out to the course. Apple Map has the ability to create offline maps at least with the newest OS version. Third party offline maps are also available.
I bought a new one last year. I thought the sat thing was “a joke.” Then I tried it. it took a minute to catch the satellites, but it is legit. I could imagine using it if I got lost when I was riding my motorcycle around the southwest deserts.
But a map and compass and the basic skills to use it still makes me feel comfortable.
And….if you get lost, just sit your ass down if you don’t know what you are doing. That is what I taught my young kids.