Transferring files to Kindle from iPhone over USB C

So I figured this should work, and, it did ... Had my jailbroken Kindle with me at Disney California Adventure the other day, and my iPhone 16 Pro and a USB C FuelRod charging kit, but no laptop or anything else. I connected the Kindle to my phone with the short USB C / USB C cable from the FuelRod, and sure enough, it appeared in the Files app on the phone. The process isn’t the most straightforward and somewhat counter-intuitive, but it worked.

Go into the Files app and long-press the content (files or folders) you want to copy to the Kindle (in my case, some files from the Reader directory in my GoodReader app, which syncs to my NAS). Long-press and select “Move” (not “Copy”) from the menu that appears (even though you probably want to copy the content, not relocate it):

In the files browser that pops up, navigate to the destination (e.g., the books folder on the Kindle), and tap Copy in the upper right corner:

If you tap the progress pie chart near the top of the screen, you can watch the transfer’s progress:

At least on the 16 Pro, it’s pretty fast! The whole process is super convenient. So stoked Apple finally [as a result of an EU mandate] dropped Lightning in favor of USB C...