Saving Maps for Offline Use
Get started by tapping on the Map Tool menu expander in the bottom right corner of map view:
Next, tap on "Download Offline Map":
At this point, you'll get to choose the are you'd like to download. Drag the map so the desired area is within the frame:
Once you've chosen the area you want to download, drag the drawer up to customize your download:
To view your offline maps, head to the Saved tab and tap on Offline Maps:
After you select an offline map to view, the downloaded area is shown as a blue frame:
GPS features are typically still available on your mobile phone even if you don't have cell service.