On the Map page when you have a satellite signal your current position is shown as a Blue Circle.
As you walk the map should move under this circle so that your current location is always displayed.
The Map Page should display the title 'GPS MAP' at the top of the page.
If the Map Page displays the title 'PLANNING' at the top, you have more than likely moved the joystick to move the map location.
When in PLANNING the map will not move location as you walk you need to get back to the 'GPS MAP' by pressing the button directly to the left of the Joystick.