Upgrade To Gvfs With MTP Support In Ubuntu 12.10 Or 12.04 To Easily Connect Android 4.0+ Devices: http://www.webupd8.org/2013/01/upgrade-to-gvfs-with-mtp-support-in.html

Like I was telling you a while back, Gvfs has been updated in Ubuntu 13.04 Raring Ringtail, bringing a new MTP backend which allows users to access Android 4.0 devices which do not support the USB Mass Storage protocol, along with many other changes. Since it's unlikely for the latest Gvfs (1.15.2) to be backported to older Ubuntu releases, you can use a PPA which has the latest Gvfs MTP backend backported to Ubuntu 12.04 and 12.10.

We've already covered a way to connect Android 4.0 devices that don't support UMS to Ubuntu, using Go-Mtpfs, but that requires to mount the Android device manually. If you upgrade to the backported packages in our PPA, you'll get seamless MTP support so when you connect an Android 4.0 device via USB, it should automatically show up in Nautilus (or Thunar, it should work with it too) without having to manually mount it. You'll also be able to unmount it from Nautilus.
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