04-23-2019 03:21 PM
There's two things that could cause this. A: Do you have a GoPro Plus account? Your phone may have been autosyncing to the cloud storage if you have a GoPro Plus account. B: Did you share any video to youtube, instagram or facebook using your GoPro?
I'm looking at my own App Info now for the GoPro app and it's saying that I have used 19.28/11.24GB of mobile data since March 29th. . Going into the details it's saying 19.28mb used in April and 4.07mb used in March. So not sure what the 11.24GB refers to.