Comment by dataflow
15 hours ago
What I want to know is under what circumstances Quick Share will send the files over the internet, and how exactly I can prevent that and force it to go solely over the local network. Nearby Share had the ability to control this, and it seems they deliberately removed it from Quick Share.
AirDrop compatible Quick Share isn't even going over the local network. It create an adhoc device-to-device wireless connection and the files are sent that way. So the two phones don't even need to be on wifi or be on the same network at all. The local network isn't involved.
Given this, I think there's minimal risk of it sending files over the internet.