I've an S4 and if I have a chance I'll test it later today. FWIW, I hardly ever connect my S4 via USB. I find it much more convenient to run an ssh server on the phone and use sftp.
Never have to be concerned with kernel updates that way. :-)
-- _ °v° /(_)\ ^ ^ Jatin Khatri RHCSA,RHCE,CCNA Registerd Linux user No #501175 www.linuxcounter.net No M$