Transfer photos from external drive to iPhone 11
I have a new iPhone 11 with iOS 13 and an external hard drive with 10,000 photos on it.
I want to transfer the photos from the HD to the iPhone/iCloud without using a computer.
I know that with iOS 13, a USB to Lightning adapter and powered USB hub files can now transferred.
My question is that having transferred the photos to a folder in "Files" how to I import them into Photos /iCloud?
Many thanks
iPhone XS Max, iOS 13