Losing Comms / connection video feed? I am using iphone 7

[kenndog]

I have lost connection and have no picture on screen of iphone 7 on a few occasions now. This has happened within short period of time from takeoff and distance from maviv pro is minimal. I was thinking initially it was 3g signal etc but after reading posts this seems not to be an issue.
Any ideas why i am having this issue?

 

[Duse]

are you using stock cable ?if so get rid of it.