For those of you who want to get most out of your Galaxy S3 GT-i9300, you will certainly want to root your Galaxy S3. Rooting your Galaxy S3 gives you lots of benefits like full control over your phone, ability to install custom ROMs, and a whole lot more. (If you would like a longer video explanation of what rooting does, please see this video “Why Root My Android Smartphone?”.
Can’t connect your Galaxy S3 to your Mac OSX computer as a disk drive?
Well, there’s a simple solution to that, just install Android File Transfer program for Mac OSX.
Also make sure you put your phone into Camera PTP Mode and you should now be able to see both internal storage and microSD card of your Galaxy S3 on your Mac OSX! Download Android File Transfer Program