To cover:
No wobbling or jerky has to be used the Z1 or if this is it. (Matter of seconds)
Fit is perfect to get off at each button and can all elements on the side of the phone open (loading Slot / SD memory card / key lock / Sim card slot / and camera button)
The shell is completely to the back of the Z1 and the left and right around the sides.
Above and below each is released, so that you also fully heard by the Internal phone boxes and can continue to plug in your headphones.
The quality is also very good and is extremely comfortable to hold through the "corrugated" pattern on the back.
To foil:
First plus point is that comes with a slide for the display page in the already mentioned very fair price of just 12 euros.
Furthermore, this is also perfectly in the shell and can be explained by the included micro-fiber cloth (which as it is the display completely dust-free and free of fingerprints makes) very well attach.
It is important that you take time and prefer even more polished than enough about the display because after a first install otherwise the dust crumbs on the major side of the foil permanently set and can no longer abzubekommen.
To remove the air bubbles this is a card from the purse.
The only complaint is that at the upper right corner of the slide an auxiliary strip is that although the application of the film on the display a little help, but remove the later a tape unsightly leaves, which I did for several minutes carefully removed with the fingers.
Conclusion:
All in all I am very, very pleased with my purchase and can only recommend to all owners of Xperia Z1 this product!