How to share a KML file with WhatsApp and open it on a phone
KML often arrives through WhatsApp in the field. Opening it is easy; preserving meaning and context is the important part.
Field takeaways
- KML carries map features such as points, lines and polygons.
- WhatsApp can weaken file naming and context.
- KMZ is a packaged KML file.
- MapLab Survey can use KML as a reference layer.
- Official boundary and CRS context must be checked separately.
Send it as a document
Attach the KML as a file in WhatsApp. Sent as an image or a screenshot, the recipient gets a picture of a boundary rather than data they can open, import as a layer or measure against.
Opening it on the phone
Tapping the file makes the phone list the apps that can handle it. Google Earth is handy for a quick visual look; importing it into MapLab Survey goes further, because the file becomes a layer you can measure, draw, photograph and annotate on top of, instead of something you merely view.
Adding it as a reference layer
- Download the KML or KMZ from WhatsApp.
- Open the relevant project in MapLab Survey.
- Add the file as a reference layer.
- Rename the layer so it shows the source.
- Keep your own measurements in a separate layer.
The ten-second check
When it opens, confirm the geometry falls where it should. A KML that appears in another country is almost never a broken file — it points to a coordinate problem at the source.
A filename is not documentation
Names like boundary.kml or location.kml say nothing on their own. Keep the job name, the date, the source and, where known, a coordinate system note together with the file, and add a line stating the survey date, the method and what the boundary actually represents.
A line on screen is not an official boundary
The KML may have started as a quick drawing over imagery, a client sketch, an official reference or an old survey, and those are not equally reliable. Write the source into the layer name and description, and treat nothing as definitive just because it renders on the map. Determining an official boundary is licensed survey engineering work; the app speeds up the field side and does not replace the side that signs.
Try these steps on your own phone.
MapLab Survey handles RTK/GNSS point capture, drawing, area and volume calculations and coordinate conversion, then exports to DXF, KML/KMZ, GeoJSON, Shapefile, GeoPackage, NCZ or CSV. Capture, calculation and export work offline. Live NTRIP corrections and online basemaps need a connection.
Frequently asked questions
Can KML be sent through WhatsApp?
Yes.
How can I open KML on a phone?
Use a viewer or import it into MapLab Survey.
Is KMZ the same as KML?
KMZ is a packaged KML.
Is a WhatsApp KML official?
Not by itself.
Technical references
The field guidance in this article is aligned with the technical and official references below.
Related: Open KML file · Create KML file · What is KMZ? · MapLab Survey