Don't know if this will help anyone. I've just got a Mantis Q and was able to download the android app from yuneec.com, but was getting the black screen. I've seen the posts about the included usb c lead not being a data cable, however I tested it with my phone (Samsung A70) in a PC and it was data compliant. I connected the controller to my iPad to compare, which worked 100%, but noted the software version was 2.04. The yuneec.com android download was 2.02. I uninstalled the app and went to apkpure and was able to download android app version 2.04. Once opened video worked straight away, using the supplied usb c cable. Seems yuneec are not giving the latest app version on their website!!