I bought this protection to protect my new jewel. She is very strong and resistant to scratches. Only drawback, it is too large 1mm. If that makes two white lines (bottom and top). I do not too much includes the holes for the motion sensor and camera as it is tempered glass. There would be no problems to let the rays.
Otherwise it does its job, but I do not recommend if you are perfectionist. Since there are 2 holes obsolete and is too big hair.
Ps: To place, I advise you to do it in a damp bathroom (personally I'm turned the shower for 3-4 minutes at the highest temperature), so that the dust particles fall to the ground. Do not be afraid because in any case, the Xperia Z1 Compact is waterproof!