Re: 12.04 does not recognize my samsung galaxy s4 (thinks it is a s2)
There have been LOTS of threads complaining about how badly Linux recognizes the Samsung S3 -- with no good solutions.
I read that it worked better with 13.04 and tested it, and indeed, when I connect my S3, a windows opens showing the SD card and the Phone filesystems.
Sorry, but I've not found any good solutions with 12.04 or 12.10 with that phone -- or any Android device that uses the ICS or JB versions of their OS.
Ubuntu 16.04 Mate, Mint 18 Mate; MS Win 8.1, MS Win10 Pro.
Will not respond to PM requests for support -- use the forums.