by tweedledog » Wed Jul 01, 2020 10:09 am
Do bear in mind that a key issue here is battery life. Like you, I have an iPhone and, of course, you cannot swap a new battery into that. In cold weather an iPhone will run down pretty quickly - not a welcome event in the Scottish hills in winter. The virtue of dedicated GPS is that you can carry spare AA batteries for it and easily swap them in.
I got my first GPS in 2002 (an eTrex Summit) at a time when there was a lot of scepticism about these newfangled thingies when compared to map and compass. The first time I used it I got caught in a blizzard on the North York Moors and as a test I decided to use it to get me back down to safety. It worked a treat and I continued to use it for planning walks, putting in waypoints, and all the rest of what it offered. A few years ago I thought I'd quite like one with maps and now have a Garmin 62s which also works fine and uses the blessed AA batteries. And as a treat for my 75th birthday i added a Garmin Fenix 3 watch which provides all sorts of entertaining information, as well as behaving like a bigger GPS.
If you are going to stick with the phone, then I'd echo the comment above about OS Locate. A good little app used in conjunction with a paper map. And by the way, ancient person that I am, I still carry map and compass and would recommend anybody to do so. Always worth having a backup...