How to save a map for offline.
Save the map at home or at the trailhead, while you still have signal. Then it works with none, contour lines and all. You don't need a radio for this.Example screens from a demo group in Yosemite Valley. The orange ring shows what to tap. Tap a screen to see it larger.
Save the area you're going to
- 1
Open Offline maps
Open the Menu and tap Offline maps. Then tap Choose an area on the map.

Offline maps 
Choose an area - 2
Draw a box and download
Drag the corners around where you're going. Signum shows how big the download is. Give it a name and tap the download button. Add Aerial photos if you want them (United States only).

Name it, download
Or save a national park
- 1
Pick a park
Further down Offline maps is a list of national parks ready to save. Tap the download button next to one.

Tap download - 2
Find it under Saved
Saved maps are listed under Saved, with their size. You can add aerial photos to a saved map later, or delete it to free up space.

Your saved maps
See all the national park maps.
Good to know
- Use Wi-Fi if you can. Maps with terrain and aerial photos can be large. Signum warns you on mobile data.
- Terrain shading makes it bigger. It shows hills and valleys, and makes a download about two to three times larger.
- Aerial photos work offline only if you saved them with the area.
- Map data can be out of date. It's made from open map data. Check official maps for closures.