Owntracks is the new Google Latitude, an App that can shares your/your smartphone location, but then 100% open source, you can find it on GitHub.
It sends device location to an MQTT broker, not only your location but lots of other information.
There are mobile clients for Android and iPhone available.
First make sure you enable MQTT and have it connect to the MQTT broker where you publish your Owntracks data.
For test purposes (only) you can use the mosquitto test server but for real use, either use your own MQTT broker or a managed Mosquitto servers in the cloud, see the MQTT wiki and the excellent article on github
Once MQTT is working, configure your DomotiGa location device like so:
The values gathered are:
Battery Status is also updated.