So i have a dead S3, can't charge, can't turn it on even using different batteries. tried putting batteries in while charger is connected, still no good. I did some digging, some say it might be the power ic? dead memory chip or the charger port etc. So i read something about riff box and similar boxes, jtag, emmc box, jpin adapter. I really need to get the data stored inside the phone, so after my reading, since I don't know soldering nor have the tools Do i:- 1) Try to power up using external power supply? 2) or no1 + Get Riffbox and the jpin adapter (since no soldering tool)? Anyone have any experience on jpin adapters for s3?