I have flown my Mini 4 Pro from several locations, both urban and in a secluded area and the result is the same, as soon as Itake off, i get the Aircraft Signal Interference message. I have flown my Air 3 in the same areas and no message about signal interference. I have also seen many videos of people flying in cities with no issues concerning signal interference. I may have to send this drone back. I have done an RC factory reset and nothing.