I'd love to be able to transfer files from my phone, directly with the cable to an Amazon Kindle 4th Generation (the old one, not the Paperwhite, like this - https://www.ebay.com/itm/266814179052).
I plug in the cable to the phone and kindle, and thought something would come up that would allow me to transfer. But no luck. I went to the USB Preferences in settings, I would have loved to click "file transfer", but in order to be able to do that, you have to be able to click on USB Controlled by Connected Device, and when I try that, it says "couldn't switch".
Does anyone have any tips for how I might be able to do this? Normally I transfer with my laptop, using the Calibre app, but there's no version of Calibre for the android.