I have had success over usb cable with my phone but it didn't seem possible with my partner's which is about three yrs younger than mine. I have a Samsung J3. however in the past I have also used a kind of sftp client which worked well. I did a brief look in the 'PlayStore' and see some options though not the one I used. someone mentioned 'airmore' which I don't know but likely similar. I've also had success with gmtp which was mentioned, but that does assume mtp is on the phone. I'd try the sshfs/sftp route if nothing else avails. there is sending stuff by email, also suggested. one can also upload to Google-drive. (assuming Android throughout.) f. -- Felmon Davis Verbum sat sapienti.