Using Google Maps to navigate an unfamiliar city or a remote hiking trail is incredibly useful, right up until the moment your smartphone loses its cellular connection. Without an internet connection to download map data on the fly, the screen goes blank, leaving you stranded. To guarantee you can always find your way home, you must proactively use Google Maps Offline.
Google Maps allows you to download massive, high-detail geographical areas directly to your phone’s internal storage over Wi-Fi. Once downloaded, the app will continue to provide turn-by-turn driving directions and search for local businesses even if you are in airplane mode. In this guide, you will learn how to download and manage offline maps.
Step 1: Downloading an Offline Map
You must perform these steps while you still have a strong internet connection, preferably Wi-Fi, as the map files can be quite large (often over 500MB).
- Open the Google Maps app on your iPhone or Android device.
- Ensure you are signed into your Google Account.
- Tap your Profile picture in the top right corner of the screen.
- Select Offline maps from the menu.
- Tap the option that says Select your own map.
A rectangular cropping tool will appear over a map of your current location.
Step 2: Selecting the Area
You must now define exactly which area you want to save to your phone.
- Use your fingers to pinch and zoom the map until the entire area you plan to visit fits inside the blue rectangle. For example, you can zoom out to capture an entire metropolitan area like Greater London or the San Francisco Bay Area.
- At the bottom of the screen, Google Maps will calculate the estimated file size (e.g., “Download will use up to 450MB of your free space”).
- If you are satisfied, tap the Download button.
The map will now download in the background. It is highly recommended to leave the app open until the download completes.
How Offline Maps Work (and What is Missing)
Once the map is downloaded, Google Maps will seamlessly switch to using the local file whenever you lose your cellular signal. You do not need to press a special “Offline Mode” button; the transition is automatic.
You can search for street addresses, find gas stations, and get turn-by-turn driving directions. However, because the app cannot communicate with Google’s servers, certain live features will be disabled:
- No Live Traffic: The app cannot warn you about sudden accidents or traffic jams, and cannot reroute you based on live conditions.
- No Walking or Transit Directions: Offline routing only works for driving. You will not get subway schedules or dedicated walking paths.
- No Alternate Routes: It will only provide the single fastest baseline route.
Managing and Updating Your Maps
Cities change constantly. Roads close and businesses move. Therefore, your downloaded maps expire after one year if they are not updated.
- Tap your Profile picture and select Offline maps.
- You will see a list of your downloaded regions.
- Tap the Gear icon (Settings) in the top right corner.
- Ensure Auto-update offline maps is turned on. Google will silently refresh the map data in the background whenever your phone is connected to Wi-Fi and charging, ensuring you are never caught with outdated directions.
By downloading offline maps before you travel, you ensure that dead zones and expensive international roaming charges never disrupt your navigation.