Offline Maps

Do Downloaded Maps Work Without Signal?

Yes. Once map data is downloaded to the device, you can use it without a live internet connection.

Do I Need To Download Everything Before A Trip?

Only the areas and map types you expect to need. Many people download their main route area and nearby fallback coverage before leaving home.

Are Downloaded Maps Synced To My Other Devices?

No. Offline maps are managed per device, so a second phone, tablet, or computer will need its own downloads.

Why Does Storage Size Not Always Match The Sum Of The Listed Maps?

Some map areas share underlying data. OMN4 shows useful per-map sizes in the list, but the total storage used on disk reflects overlaps as well.