Root your Samsung Galaxy S3 On Android 4.1.2 Jelly Bean Official Firmware

[jakson0100]

If you are an owner of Galaxy S3 GT-I9305 and have already updated your device to the latest firmware version, you may want to root it to gain full control over the phone. Below is an easy-to-follow step by step tutorial to help you perform a root on your International Samsung Galaxy S3 LTE running Android 4.1.2 Jelly Bean.
How to root