New here. I use a Phantom 4RTK to survey with. It used to save the satellite imagery for the base image even when not connected to WiFi as long as you planned the flight while connected to the internet. I have the controller with a screen but can't find a setting so I have the satellite image while in the field if I need to make adjustments. We don't have cell service in a lot of areas here so hotspotting to get internet isn't always an option. Thanks in advance!