So when I fire up DJ go 4 app on iPhone, without the aircraft being on, in the lower right corner are my maps that I've used with the app on the Mavic. Then when I fire up the spark I have no maps, nor are they hidden behind a small icon. They are just gone. What am I doing wrong? I realize I have to cache the maps and try to do that as well and I still don't get an indicator of how to get to my Maps when I'm looking at the DJI GO 4 for spark aircraft screen ......help!