Good to know. I have a Galaxy s9+ and i tried it once with the spark that i recently acquired. I've been using the ipad mini 4. Nice to know its working with the S9 plus..
It's working perfect and without the otg cable. I personally use it without it. The delay is almost none so It doesn't bother me. Distance over 500 meters. Otherwise it's to dangerous because above 100 meters you can't see the drone.