Smartphone Running MyTracks Showing GPS Info for Time Calibration
Above shows the GPS status provided by our smartphone's built-in gps and shown by an app, GPS Status. The third icon from the top left shows the app MyTracks is running and is logging our location along the way. The image below shows the final product, a geotagged image.
Here's a quick tutorial on geotagging your Sony A7 photos using your GPS enabled smartphone and exiftool.