Tested by IvyEverything in this shop went out on a real trip with me before it earned a listing. Wet, cold, dropped, packed out. This one passed.
Phone batteries die fastest in the cold, usually right when the trail markers stop. The Survival Pocket Compass needs no charging at all: a slim black housing, a full 360-degree dial, and a key ring so it is already on your pack when the map stops matching the ground.
20-degree graduations around the dial give you a bearing you can walk, not just a rough sense of north.
Built-in key ring clips to a zipper pull, belt loop, or lanyard, so it never ends up in the other jacket.
No batteries, no signal, no screen, which is why it earns space next to your phone rather than replacing it.
Flat pocket-sized disc that vanishes into a lid pocket and adds nothing you will feel on a long climb.
Clip it on before your next trip and you will have a bearing every time the trail gets vague.