Has any concrete proof been brought to light that any existing DJI drones /products have transmitted critical data or caused a problem with our communications networks?
And if so, how exactly would that happen? Especially now that no flight logs...
You need a card with a minimum U3 or V30 rating. The size is dependent on how much content you are generating. Memory cards wear out, there is a maximum number of times they can be written to. The sweet spot for me is 128 GB, and I'll swap them...