Hi there,

Am hoping for a little help with a problem before i send drone off to DJI,

The spark is operating normally when only connected to my iPhone X. No problems whatsoever and have done multiple flights to test this.

However when I connect the controller I am getting multiple errors:

No video to phone,
gimbal disconnected,
air encoder error message,
no battery percentage.

When I power up spark and controller they seem to pair fine (green light on controller and correct flashing LEDs on drone) however when I open DJI GO 4 app and connect to controller the above problems start.

I have tried the following to fix:

Updated/checked running latest firmware on drone and controller,
Reset and re-paired drone and controller,
Powered on and off several times and re-attempt connection,
Deleted and reinstalled DJI app,
Using different SD cards after reformatting them both (Sandisc 16 and 64GB).   

I can always go back and just connect spark to device through DJI app and fly normally, so its making me think it is a controller problem? But I am just guessing.

If anyone has encountered this problem or just has some more advice I would be greatly appreciative

I think this is hardware error. Talk to DJI.

Thanks, seems if I turn off my Bluetooth all these issues go away!

I just wanted to say "Any bluetooth device around or bluetooth on in the phone?"
Try out, how your iPhone works with a (officially unsupported) otg cable.
You need one from micro usb to lightning, since otg is directional
In case your X works with it, your RC is not longer using the second wifi.
Which is the one, that can be easily disturbed.