This pack of screen protectors fit relatively easily on the S3 Mini. They do not fit right up to the edge of the screen, but cover the whole area which is used. This is actually an advantage if you have the sort of cover/case which fits round the sides of the phone, as there is no overlap between the edge of the case and the screen protector, so no peeling at the edges. It also makes it a bit easier to apply if you have a little leeway when lining up the edges.
The kit comes with a small microfibre cleaning cloth, which is fairly effective at removing specks of dust and dirt from the screen, and a small piece of card for smoothing out bubbles. It is worth spending time on cleaning the screen very carefully - I end up doing this in the bathroom to get away from pet hair! I found the screen protectors a bit stiffer than others I've used for iPhone and iPod, and therefore a bit trickier to apply. The final top layer was a pain to remove, and first the screen protector peeled away with it (so needed to smooth it all back down again), and then the sticker tab peeled off leaving the top layer behind. Eventually though it worked, and the results are good, no problems with touch sensitivity or visibility of the display.
Delivery from Techgear solutions was impressively fast. It's useful having a pack of 5, as they don't last for ever and also you can afford to discard one if you get dust and bubbles underneath that won't go.