1CM2 Said:
"Create new folder, add files: I would like to create a new folder on the home screen and drop files in it that are already on my iPhone 12. This is fairly straight forward elsewhere, and I find it a nightmarish experience here. I see a few tutorials about grouping apps - but that's not it. How do I do this?"
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Adding Folders to Home Screen:
You Can't. What you are looking to perform is not an option. You need to see the iCloud Drive app, and then you cam maunder files from there.
I. Enable iCloud Drive on an iPhone:
- Go to: Settings
- Tap: [your name] (the top item)
- Tap: iCloud
- Tap: [an item] (so that it is green)
- Tap: iCloud Drive (so that it is green)
Then...
II. Go Here to Perform the Maneuvers: https://www.icloud.com/iclouddrive
Link for Reference...
Move Apps and Create Folders on your iPhone, iPad, or iPod touch - Apple Support
Continue to my following reply.