Re: Can I change out sim readers from one phone to another
If you know how to unsolder and solder to very small pins on very thin boards, they're probably the same pinout, so it should work. But if you don't have the experience, don't try it, or you'll end up with an S3 with a burned main board when you finish working on it. (A 15 Watt iron with temperature control and a point tip is about the most heat you want to put on the board.)