When the watch is close enough to communicate with its paired phone, it may start to use the phone's location information.
Android Phone Users
When the watch is close enough to communicate with its paired phone, it uses the phone's location information.
To use the built-in GPS of this unit, turn off the location information of your smartphone or enter the watch's Airplane Mode.
iPhone Users
CASIO apps use the watch's built-in GPS. Note, however, that some functions may use your smartphone's location information.