One thing that isn't clear to me. The phone clearly supports GPS in terms of hardware, but does it actually do anything with it? It won't have access to Google or Apple navigation, and that is certainly something I use my current phone's GPS for.
There's plenty of GNU/Linux apps, some of them providing online and offline turn-by-turn navigation, and some of them even already working well on mobile form factors.
The software will surely need some time in order to get polished enough to be used by a total newbie out-of-the-box, but it's not like there's no software for that at all.
I currently use Google Maps on my Android phone for its navigation.
That's important to me, but another user is saying there are Linux apps that do that already, so for me, that's even better!
This was my experience using safari on ios.