I record the results of my testing and tell you what i ve discovered.
Otg cable dji spark not working.
A micro usb otg cable is required when working with mavic mini.
1 connect the usb cable to the otg cable.
Wait till they connect solid green light on the rc 4 start the go 4 app on your android.
Otg cable is the way to go.
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In this video i test the otg cable with my dji spark.
3 start your spark and rc.
The irony is that because i have to stay on dji go 4 4 1 14 that still works with otg for spark i cannot buy the new mavic air as this old version does not recognize it the same applies to mavic 2 once they release it.
Wait till it connects and tells you to go fly 5 connect the otg cable to the rc.
I hate it when flying my drone and sometimes getting the message i lost connection when not even 100 meter.
Android and spark is probably not interresting for dji anymore so those of us who need the otg cable are stuck on older versions 4 1 15 and lower.
In case i wasn t clear in my vide.
6 click on the go fly button on the go 4 app.