Worst was they changed the way it zooms in and out to make it more generic. It means I can no longer zoom out on the 25k map stored on my phone, to look at the big picture. It now switches to the 50k map and then another scale, as you zoom out. This works great when I have a phone signal, but as soon as I don't, ie in the middle of nowhere when I need a map, I just get a useless blank screen or a tiny area at 25k
I drove up to Lynton VOTR to climb a few weeks back. Stopped in North Molton, to take a look at the map on the phone and surprise no signal. Had to use my paper AA map.
No compass needed .btw
Apologies for butting in, but I've been assuming that discussions regarding GPS refer to dedicated GPS devices rather than phones that can do some of the same things, but by no means all.
For example, zooming in and out on a Satmap Active 20 is very different from what you described. Depending on the map card used, zooming can automatically switch between a whole series of maps from 1:10k street level through to the base map. Or the device can manually cycle through the installed maps: 10k, 25k, etc.
(I gave up trying to use a phone for navigating a long time ago!)