To manage depth contour settings, click on the Layers icon located at the top right of the map.

Under “Depth contours”, click on “Source: Navionics” in blue.  Here, you will be able to:

• Pick your source, either Navionics HD depth maps or C-Map Genesis Social Map (crowdsourced) for your Fishbrain map. This only applies to Fishbrain Pro members in the US and Canada.

For Navionics HD depth maps, a few additional options are available. 

• You can choose your preferred depth map style.  "Transparent" style allows you to see the satellite image underneath, while the "Full" style provides a classic experience for boating. 
• You can also choose to select “WiFi only” or “WiFi and cellular” to load depth maps.  The “WiFi only” option will load depth contours in new locations only if WiFi is available, saving your phone's cellular data. 

If you selected “WiFi only”,  the Fishbrain app will inform you that you have your cellular data on, instead of your WiFi, with an icon appearing on your depth contour layer: