In the field, you often work in areas without a data connection. If that's the case, you can download the map to make it available when you have no connection. You can also download or copy basemaps directly to your device and reuse them across multiple maps. Once you have your map offline, you will be able to work with your map (including collecting and editing data) the same as when you were connected.
To work offline, download the map to your device.
You are taken back to the Map Gallery and the map is downloading. Depending on the size of your map, the download could take some time.
Basemaps provide the frame of reference for your data. When working offline, you can use local basemaps instead of downloading the basemap that supports each map you use offline. This has a few advantages over downloading: it is faster in most cases, and you can prepare basemaps for much larger areas.
Sync allows you to send and receive updates for maps you've taken offline. Anytime you regain connectivity and want to check for new updates or send your updates for other people to see, tap Sync on the map card in the Map Gallery.
Occasionally, you may need to manage the maps or basemaps you have on your device. You might want to remove the map because you're finished with it, because it is out-of-date, to free up space on your device, or so you can use it to connect again. Manage can be found in the Overflow menu of the Map Gallery. On the Manage screen, you can switch between maps and basemaps. To remove a map or basemap, tap Remove on the item card.
When removing a map, you can remove the entire map (including the basemap), or you can remove the map but save the basemap for future use. This is useful if you expect to reuse the basemap again with another map.