You can view the maps from any Garmin Lakemaster SD card or micro SD card using Garmin Basecamp. Download and install Basecamp from Garmins website. Then insert your chip into your PC cards SD slot while it’s running. Make sure you click on the Lakemaster text on the left side of the Basecamp app to load the map onto the app.
As for phones, nothing can be done except to mirror your PC screen onto your phone. You’d have to bring your laptop with. Even then, it won’t show you your current location.