Google Maps allows users to mark exact locations on the map. This feature can be used on Google Maps on Android, iPhone, and desktop. The feature allows users to share the pin with their recent apps or contacts. Here is how to use the drop pin feature across all platforms.Google Maps allows users to mark exact locations on the map. This feature can be used on Google Maps on Android, iPhone, and desktop. The feature allows users to share the pin with their recent apps or contacts. Here is how to use the drop pin feature across all platforms.