Thinking to buy the Galaxy s6,but want SD support and removable battery,try the S6 Rom on your Samsung Galaxy S3 Everything is working out of the box, you also get a lot of the s6 apps .
The latest S6 ROM actually runs very smooth, fast and you will be able to experience S6 Apps! .
Read further for more info.
Please Follow the Instructions carefully and if you have any doubts ,watch the video carefully!