Recent owner of a Galaxy S3 and using fairly intense, I wished to keep it in your pocket and get out quickly without having to open any case. Therefore, the only solution was a shell coupled to a display protection film. The screen of the Galaxy S3 is slightly rounded on the ends, the movie does not fully cover the screen but only the flat space (~ 4mm to the edges of the screen). Having never been a protective film, I was hesitant to leave bubbles or misalign the film, but finally my film is perfectly placed, and on the first try. Fingerprints do not easily take on the naked and the touch screen does not seem affected at all. In short, the product meets all my expectations. :)
