While this is advertised as for the S3, it clearly isn't designed for the phone specifically. The phone fits into the actual case alright but the phone is too long for the case so the wrap-over lid doesn't reach around the other side and won't close properly. You can get it to close by stretching it, but it's not a perfect fit for the this phone. The case is also a little bit on the tight side (width-wise) for my liking, meaning that it's harder to get the phone out of the case than it should be.
Other than that it does a decent job. By no means a bad case, just not a perfect fit, so be warned.