1. When you need offline maps
Underground, in the mountains and in remote areas the signal is weak, and roaming data abroad is expensive. Downloading offline maps avoids navigating a strange city on mobile data.
Even where Wi-Fi exists, metro, bus and walking segments often lose the connection, so offline maps are a useful last layer of protection.
2. Prepare before downloading
Update the app and download the offline map for your destination area over stable Wi-Fi.
Watch the area size limit and your phone's storage. The downloaded area should cover the airport-to-city route and the main places you will visit.
3. A map is not enough
Save hotel addresses and confirmation emails, offline translation packs, transport timetables and emergency numbers before you go.
Offline maps mainly answer where you are and how to get somewhere; business phone numbers, opening hours and live information are not available without a connection.
4. Tips after arrival
GPS positioning does not need a data connection. Star places and save the hotel location in advance, then navigate with the offline map.
Live traffic, real-time transit departures and online search are unavailable offline, so leave buffer time in your plans.
5. Common mistakes
Common mistakes include downloading on departure day with an incomplete area, forgetting to update the download, assuming every map feature works offline, and downloading only after arriving, which burns roaming data.
Update the map data once more before leaving the country so you are not navigating with an outdated version.
6. Checklist before departure
Before departure: download and update the offline map for your destination; save the hotel, airport, embassy and emergency contacts; download an offline translation pack; confirm enough storage on your phone.