phone no longer mounts over usb

[Patrick O'Callaghan]

On Sun, 2013-08-11 at 22:14 -0700, Craig White wrote:
> > Presumably this is Android, but which version? If it's 4.x, stock
> > Android doesn't support direct mass storage access (unless you root
> it).
> > This has been the case for over a year and is unrelated to the Linux
> > kernel on your machine. You're supposed to use MTP, for which there
> are
> > several apps in the Fedora repos, e.g. simple-mtpfs. Just don't
> expect
> > it to be a substitute for a real filesystem (no random access for
> one
> > thing).
> > 
> > Or use wireless access via FTP, SSH, Rsync etc., for which there are
> > apps in the Google Play Store.
> ----
> In the interest of accuracy...
> 
> Android phones with SD cards do support usb storage - that's actually
> how SD cards work on android phones. USB storage on Android phones
> actually unmounts the SD card on the phone so you can mount it on your
> computer. 
> 
> The built-in memory is not accessible via usb storage and phones like
> the Nexus 4 which don't have an SD card slot can only be accessed
> directly using MTP. The built-in memory cannot be unmounted on a
> telephone so usb storage isn't an option for this storage area -
> that's
> why you need to use MTP which allows simultaneous access to both the
> phone and the host computer.

You're quite right Craig. I was forgetting that some phones have real SD
cards. Mine is a Nexus so the "SD Card" is simulated and hence mass
storage access is not available.

poc