It takes less than thirty seconds to fit the case. Although easy to push the clear cover over the front of the phone, the heavier back takes a little pressure to get the mobile in the right position, as it is such a good snug fit. Once on, the earphone and charger ports are protected from dust and moisture by small covers that push in place. The volume and power buttons are still easy to use as they have a corresponding outer button on either side of the case. I have had no issues using the touch screen with the case fitted.The touch screen sensitivity was a big issue when choosing the case but I have found that the mobile is as sensitive with the case as without.
All in all, I love the case, having had it for almost a year, the phone feels naked without it. I have dropped the phone a few times and it has been fine, the case does what it is supposed to, is worth the money and looks the part. I have big hands and find it easier to use my Samsung Galaxy S3 with the case than without. One-handed texting feels more secure as the case is more grippy and easier to hold than the original, smooth and slippery mobile cover, a factor that is important when outside in all weathers and conditions.
I can't rate it enough, buy one, you won't regret it.