Anyone who is having problems connecting to an Android 4.x device out of the box has probably seen this post (read my whole blog before going to that link):
The huge bold letters at the top are correct. Do NOT attempt those steps if you have 13.04 or 13.10 based Linux Mint. If you already have, in order to get your device working you will have to uninstall MTP based packages mtpfs mtp-tools and gmtp . You do NOT need go-mtpfs or any other ppas or packages it works out of the box.
To get your Android 4.x device connected you must connect to a USB 3.0 port. Yes, it's dumb but that's the way it is.
Then reboot your device several times and make sure developer mode is turned on.
In other words Android 4.x should work out of the box with 13.04+ and if you have done anything else to get it to work you'll have to undo it before plugging your Android into a USB 3.0 and rebooting the Android device to get it to work.