New use for an Android phone with USB-C, USB disk management. I needed to erase a 16 GB USB stick but the Mac (via DiskUtility) wouldn’t unmount the drive so the erasure failed.
Attached a USB-C adaptor & shoved it up the Nokia 7.1 which wouldn’t recognise the drive but did offer to initialise it.
Accepted the offer.
This put it into a state whereby DiskUtility could unmount it & I was then able to erase the drive completely, removing the just-added Android files too.