@mhoye Makes sense. I avoided the things until I could get something that I could treat as a pocket computer running stuff I wrote for it myself (didn't even let my first cell "phone" on the cell network, Nokia N900) so not being able to just shove files in/out would have been a deal breaker for me.
@neal Man, it's not baffling to me at all. This is the phone I had until like 2008.
https://www.gsmarena.com/sony_ericsson_z520-1202.php
... and getting _anything_ into or out of it was a nightmare.