Dear E.Foundation, I recently had an OS update for my Samsung Galaxy S9.
Before, I could plug the USB cable between the phone and the PC in either Ubuntu or Windows, turn on USB File Transfer, and move pictures and e-books etc.
But after the most recent OS update, the option ‘File Transfer’ is greyed out, along with all other options in the USB preferences screen. It’s set to ‘No transfer’ and I can’t click the other options.
I have developer options turned on.
I hope I translated the screens names correctly, I have it in Dutch and it’s the options under ‘Instellingen - Verbonden apparaten - USB’ – ‘Preferences - connected devices - USB’.
One can only change these settings with a working, that is “live” USB connection
Check “Default USB” for which Enable Developer options may be required.
If you do not see “Developer Options”, go into “About phone” in Settings and tap on the “Build number” entry seven times, which will unlock “Developer Options”.