Pretty much every review out there says that they scrapped the GPS in favor of the wifi.

I downloaded the manual to figure it out. You must install an app called CameraWindow on your smartphone. Then you go to the wifi settings on the camera and choose to either use the camera as an access point or using an existing access point. Then you go through a pairing process and after it's paired, geotagging should just work. Not sure if you have to start the app on your phone every time or if you can set it up to start automatically.