Have the envelope from the beginning of my white S3, so now since about 3 weeks. The color of these semi-transparent shell looks really great and makes the S3 a little more individual. In addition, the cover sits just super, the connections (USB and jack) can still be used without restrictions and also the buttons are still operated without problems. The cutouts for the camera, LED, telephone and ambient microphone and loudspeakers are in the right place, do not cover it, and therefore restrict the function in any way. Dirt accumulates only slightly below edges, once I've done the envelope again and the dust brought out below. The shell sits so well, that you can even solve the battery cover with the settle. The heat development with tucked shell I would describe as ok, heat is transferred well, heat build I could not tell. Quite often I've read that the S3 is very slippery in the hand, with the shell, it is definitely not the case, is super good grip. And if it then but times should slip out of your hands and popping on the ground, protects the shell in any case from scratches.
I give the envelope a strong buy recommendation, for the price you can not really go wrong and protect his super expensive S3 good.